FUTURE GADGET LAB / ARCHIVE 001
WORLD LINE
OBSERVATION ATLAS
DIVERGENCE
?.??????
%
Browse works and chapters
Browse event research pages
Works
Sources
Report an issue
Language
English
Change display language
×
中文（台灣）
100%
中文（香港）
100%
简体中文（中国）
100%
日本語
100%
English
100%
한국어
100%
Story date
Work flow
Search story
⌕
Works
2
STEINS;GATE、STEINS;GATE 0
Visible works
Selected works reveal all catalogued story content
×
Select all
Clear all
Restore default
STEINS;GATE
STEINS;GATE ELITE
STEINS;GATE RE:BOOT
STEINS;GATE 0
STEINS;GATE: My Darling's Embrace
STEINS;GATE 比翼恋理のだーりん
STEINS;GATE: Linear Bounded Phenogram
STEINS;GATE 線形拘束のフェノグラム
STEINS;GATE: Variant Space Octet
STEINS;GATE 変移空間のオクテット
Famicom ADV STEINS;GATE
ファミコレADV シュタインズ・ゲート
STEINS;GATE TV Anime
TVアニメ STEINS;GATE
Egoistic Poriomania
横行跋扈のポリオマニア
Open the Missing Link
境界面上のミッシングリンク
STEINS;GATE 0 TV Anime
TVアニメ STEINS;GATE 0
STEINS;GATE 0 OVA
結晶多形のヴァレンティヌス
STEINS;GATE: The Movie − Load Region of Déjà Vu
劇場版 STEINS;GATE 負荷領域のデジャヴ
Drama CD α “哀心迷図のバベル”
哀心迷図のバベル
Drama CD β “無限遠点のアークライト”
無限遠点のアークライト
Drama CD γ “暗黒次元のハイド”
暗黒次元のハイド
閉時曲線のエピグラフ
永劫回帰のパンドラ
無限遠点のアルタイル
STEINS;GATE Manga
STEINS;GATE
STEINS;GATE 0 Manga
STEINS;GATE 0
史上最強のスライトフィーバー
コミックフラグメンツ 並行世界のシノプシス
STEINS;GATE: Braunian Motion of Love and Hate
STEINS;GATE 恩讐のブラウニアンモーション
The Distant Valhalla
Holy Day of Scourge
閉時曲線のエピグラフ First-Edition Drama CD
閉時曲線のエピグラフ 初回限定版ドラマCD
永劫回帰のパンドラ First-Edition Drama CD
永劫回帰のパンドラ 初回限定版ドラマCD
時限輪転のアルペジオ
多元階差のテスティモニー
Category
All
Core game route
Official side story / if
Media adaptation
Reliable inference
Community theory
Selected works contain full spoilers
VISIBLE EVENTS
149
WORLD LINES
28
Drag to pan · Wheel to zoom · Select a node to focus
Diamond = this event’s related position on another world line
Structure overview
Fit atlas
1975
Suzuha Arrives in 1975 with Amnesia
Suzuha reaches 1975 in the incompletely repaired time machine, but the impact of the malfunction erases her memory of the mission to obtain the IBN 5100.
Expand event details ↓
1975
Suzuha Arrives in 1975 to Carry Out the IBN 5100 Mission
Suzuha Amane travels from 2010 to 1975 and begins securing the IBN 5100 that will later be needed to decode the SERN database.
Expand event details ↓
Around 1999 (approximately 24 years after arrival)
Suzuha's Memory Returns after the Opportunity to Complete the Mission Has Passed
Roughly twenty-four years after arriving, Suzuha remembers that she came from the future and was searching for the IBN 5100, but the opportunity to complete the mission is already gone.
Expand event details ↓
2000
Suzuha Leaves a Letter of Regret before Her Death
Suzuha writes Okabe a letter describing the failed mission and her life, entrusts it to Yugo Tennouji for later delivery, and dies in 2000.
Expand event details ↓
Around 2000
Suzu Hashida Entrusts the IBN 5100 to Yukitaka Akiha
As her condition worsens, Suzu Hashida entrusts the IBN 5100, research equipment, and the remaining delivery arrangements to Yukitaka Akiha.
Expand event details ↓
2000
Suzu Hashida Dies of Illness in 2000
After living in the past for decades, Suzu Hashida dies as her physical condition deteriorates, but only after completing the arrangements to preserve and transfer the IBN 5100.
Expand event details ↓
Around 2000 (recalled in 2010)
Mayuri Recalls Okabe's Childhood Fever
Mayuri recalls that Okabe suffered a prolonged fever ten years earlier. Okabe recognizes that experience as resembling Reading Steiner.
Expand event details ↓
Object changed July 28 / paper later destroyed in 2010
The Ordinary Upa Causes Nakabachi’s Paper to Burn in the Cargo Hold
Okabe first makes Mayuri receive an ordinary Upa. With no metal object in Nakabachi’s envelope, the paper avoids screening and burns in the flight’s cargo-hold fire.
Expand event details ↓
July 28, 2010
Mayuri Draws the Metal Upa
Mayuri obtains a rare Metal Upa from a capsule machine at Radio Kaikan and stores it in an envelope.
Expand event details ↓
July 28, 2010
Kurisu Asks What Okabe Was Trying to Say
Okabe meets Kurisu for the first time in a Radio Kaikan corridor, but she stops him as though they have met before and asks what he had been trying to tell her.
Expand event details ↓
July 28, 2010
Okabe Follows the Scream and Finds Kurisu Collapsed
After Dr. Nakabachi’s presentation is cancelled, Okabe hears a scream inside Radio Kaikan and follows it to find Kurisu lying in a pool of blood.
Expand event details ↓
July 28, 2010
A Time Machine Appears at Radio Kaikan After Reconstruction
After the first message is sent, Okabe loses his balance under Reading Steiner. When he recovers, the crowds have briefly vanished, the presentation has been cancelled, and a satellite-like time machine is lodged on the roof of Radio Kaikan.
Expand event details ↓
July 28, 2010 (first rescue)
Kurisu and Dr. Nakabachi Fight over the Time-Machine Paper
Kurisu shows her father the paper, hoping to repair their relationship. Driven by jealousy and obsession, Nakabachi tries to steal it and escalates to a knife threat.
Expand event details ↓
July 28, 2010 (second rescue)
Okabe Uses His Own Blood to Fake Kurisu’s Death
Okabe saves Kurisu and renders her unconscious, then stages the scene with his own blood so his past self will still see the remembered pool of blood.
Expand event details ↓
July 28, 2010
Dr. Nakabachi’s Time-Machine Presentation
Okabe and Mayuri reach Radio Kaikan for Dr. Nakabachi’s presentation. Nakabachi repackages existing time-travel theories as his own claims, and an anomaly on the roof soon interrupts the event.
Expand event details ↓
July 28, 2010
The First D-Mail Rewrites the World Line
Okabe sends Itaru Hashida a message stating that Kurisu was attacked, but the active PhoneWave delivers it several days into the past.
Expand event details ↓
July 29 to early August 2010
The John Titor Thread Appears
After the world-line shift, Okabe finds that the record of a time traveler appearing in 2000 has vanished. In its place, John Titor appears in 2010 and warns of a future ruled by SERN.
Expand event details ↓
July 29, 2010
Okabe Confirms That Kurisu Is Alive
When Okabe attends another time-machine lecture, he finds Kurisu serving as the speaker, directly contradicting his memory of finding her dead.
Expand event details ↓
July 29, 2010
Okabe Meets Suzuha and Moeka
Yugo Tennouji hires Suzuha Amane to work at the CRT shop. Okabe later meets Moeka Kiryu, who is searching for the IBN 5100 and communicates mainly through text messages.
Expand event details ↓
August 2010
Delete the Original Record and Return to Beta
Okabe deletes the tracking record of the first D-Mail from the SERN database and leaves Alpha. Mayuri survives, but the history in which Kurisu dies becomes real again.
Expand event details ↓
Around August 1, 2010
The Gel-Banana and PhoneWave Experiment
The lab discovers that a banana becomes gelified after the PhoneWave operates and returns to its original bunch, suggesting a connection between the material effect and time.
Expand event details ↓
Late August 2010
Stardust Sky
When the Kurisu mail flags are not met, Okabe returns to Beta and chooses to move into the future together with Mayuri.
Expand event details ↓
Late August 2010
Paradox Meltdown
When some Kurisu mail flags are met but the true-ending conditions are incomplete, Okabe acknowledges their love and still returns to the Beta world line where she dies.
Expand event details ↓
Around August 1, 2010
Itaru Hashida Breaks into a SERN Server
Okabe asks Itaru to investigate SERN based on John Titor’s claims. They gain access to a server and find a program that requires the IBN 5100 to decode.
Expand event details ↓
Around August 1, 2010
Faris Trades a Clue for a RaiNet Match
Mayuri learns that Faris may know where an IBN 5100 is located. Okabe agrees to a RaiNet Access Battlers match and receives a clue pointing to Yanabayashi Shrine.
Expand event details ↓
Around August 1, 2010
The Lab Retrieves an IBN 5100 from Yanabayashi Shrine
Luka’s father has safeguarded an IBN 5100 entrusted to him for a young man in the future. Okabe and the others carry the heavy computer back to the lab.
Expand event details ↓
Around August 1, 2010
Suzuha Shows Immediate Hostility toward Kurisu
While the IBN 5100 is being transported, Suzuha sees Kurisu and instantly becomes guarded without explaining why.
Expand event details ↓
Early August 2010
Faris's D-Mail Rewrites Akihabara and the IBN 5100's Location
Yukitaka Akiha survives, while moe culture and maid cafés disappear from Akihabara. The lab also no longer possesses the IBN 5100.
Expand event details ↓
Early August 2010
Suzuha Asks the Lab to Help Find Her Father
Suzuha explains that she came to Akihabara to find the father she has not seen for many years, and the lab follows the available clues.
Expand event details ↓
Early August 2010
Suzuha Prepares to Leave without Finding Her Father
When the clues run out, Suzuha leaves a farewell and prepares to depart from 2010 to carry out her mission.
Expand event details ↓
Mid-August 2010
The Lab's Network Is Found to Connect Directly to SERN
Itaru discovers that the lab's network route connects unusually directly to SERN, suggesting that the lab may already be within its surveillance range.
Expand event details ↓
Mid-August 2010
Kurisu Explains How She Became Estranged from Her Father
Kurisu explains that her father became frustrated by his time-machine theories and that her own scientific success only deepened their conflict. She had hoped to repair their relationship after returning to Japan.
Expand event details ↓
Mid-August 2010
Suzuha Reveals That She Is John Titor
Standing before the time machine, Suzuha reveals that she came from 2036 and is the John Titor who posted on the Alpha world line.
Expand event details ↓
Mid-August 2010
Suzuha Explains Attractor Fields and the Divergence Meter
Suzuha explains that many world lines converge on common outcomes within a larger Attractor Field and gives Okabe the Divergence Meter built by his future self.
Expand event details ↓
Mid-August 2010
ECHELON Intercepts the First D-Mail
Suzuha and the lab establish that ECHELON intercepted the first anomalous mail sent into the past, allowing SERN to identify the lab’s time-machine research in the future.
Expand event details ↓
Departing August 2010 / traveling to 1975
Okabe and Suzuha Travel to 1975 Together
Suzuha invites the nearly broken Okabe to travel with her, and the two leave 2010 in the time machine for 1975.
Expand event details ↓
Mid-August 2010 (after reconstruction)
Suzuha's Mission Succeeds after Her D-Mail Is Undone
After the world line is reconstructed, Suzuha leaves on schedule without suffering time-machine damage or amnesia. In the past, she completes the arrangements for delivering the IBN 5100 and lives out the rest of her life peacefully.
Expand event details ↓
Mid-August 2010
The SERN Raid Still Occurs after Being Delayed
Okabe waits beyond the former deadline and initially believes Mayuri has been saved, but the SERN raid merely occurs the next day. The convergent outcome remains.
Expand event details ↓
Mid-August 2010
Okabe Decides to Undo the D-Mails in Reverse Order
Okabe and Kurisu infer that they must begin with the most recent historical change and progressively restore the original transfer and custody of the IBN 5100.
Expand event details ↓
Mid-August 2010
The Faris Championship Match and the 4°C Pursuit
Faris first asks Okabe to help her reclaim the RaiNet Access Battlers championship. After the match, 4°C and his group pursue them, and Okabe uses time leaping to revise his actions.
Expand event details ↓
Mid-August 2010
Yukitaka Akiha Rescues Okabe and Faris
Yukitaka removes the pair from danger. Seeing her father alive, Faris admits that she sent a fabricated kidnapping message that changed his itinerary.
Expand event details ↓
Mid-August 2010 (Omega branch)
Faris Uses an Alternative D-Mail to Keep Her Father Alive
If Okabe does not send the main-route cancellation, he and Faris devise another message intended to preserve her father’s life while changing the past.
Expand event details ↓
Mid-August 2010 (Omega world line)
The Future Gadget Lab No Longer Exists on the Omega World Line
After reconstruction, the familiar relationships among the lab members and the former history of Akihabara are gone. Only Okabe retains the original memories.
Expand event details ↓
Mid-August 2010
Okabe Explains the Rewritten Birth and the Cost of Undoing It to Luka
Okabe tells the female Luka that a D-Mail changed the outcome of her birth and that restoring the IBN 5100 requires undoing the life she now knows.
Expand event details ↓
Mid-August 2010 (after a time leap)
Okabe Time Leaps and Approaches the Date Differently
The first date fails because Okabe relies too heavily on a manual. He time leaps and tries again, accompanying Luka in the way they normally relate to each other.
Expand event details ↓
Mid-August 2010
Luka Recalls the IBN 5100 Locker Clue
Luka remembers that on another world line she moved the IBN 5100 at Okabe’s request and temporarily placed it in a station locker.
Expand event details ↓
Mid-August 2010 (Luka branch)
Mayuri Still Dies after the D-Mail Is Not Undone
Okabe preserves Luka’s life as a woman, so the world line remains within the Alpha Attractor Field. Mayuri still dies during Comic Market.
Expand event details ↓
Mid-August 2010 (returning to before Comic Market)
Luka Time Leaps to before Comic Market
Luka uses the Time Leap Machine to return to a point when Mayuri is still alive and joins Okabe in fulfilling their promise to attend Comic Market.
Expand event details ↓
Mid-August 2010
Okabe Finds That Moeka Has Died by Suicide
While searching for Moeka after undoing Luka’s D-Mail, Okabe learns at her apartment that she died by suicide the previous day.
Expand event details ↓
Mid-August 2010 (around a time leap)
Okabe Realizes That Someone Used the Time Leap Machine before Him
When Okabe returns to the lab to leap, he finds traces of a recent activation by an unknown person. After his own leap, the world around him contains changes he cannot yet explain.
Expand event details ↓
Mid-August 2010 (after a time leap)
Okabe Confronts Moeka after FB Abandons Her
Returning to before her suicide, Okabe demands to know why Moeka took the IBN 5100. She can only wait for FB’s instructions and cannot accept that she has been abandoned.
Expand event details ↓
Mid-August 2010
Moeka Describes Her Recruitment and Dependence on FB
Moeka explains that FB accepted her through phone messages at the lowest point in her life, causing her to bind obedience to her sense of worth.
Expand event details ↓
Mid-August 2010 (first cancellation attempt)
The First Cancellation Message Sent from Moeka's Phone Fails
Okabe uses Moeka’s phone to tell her past self to stop looking for the IBN 5100, but the world line does not change as expected because she obeys only FB.
Expand event details ↓
Mid-August 2010 (multiple surveillance attempts)
Okabe Follows the IBN 5100 Locker Relay
Okabe and Moeka watch a station locker, follow several Rounders handing off the IBN 5100, and use repeated time leaps to correct failed surveillance attempts.
Expand event details ↓
Mid-August 2010
The Rounders Have Sent the IBN 5100 to France
After tracing the relay, Okabe learns that the IBN 5100 taken by Moeka has left Japan for a SERN facility in France.
Expand event details ↓
During Comic Market in mid-August 2010
Mayuri Still Dies after Okabe Delays the Deletion
Okabe accompanies Mayuri to Comic Market without telling her about the deadline. That evening, she is struck by a vehicle after pushing him out of its path.
Expand event details ↓
Accumulated in Chapters 4–10 / evaluated in Chapter 10
Replies to Kurisu’s Messages Accumulate the True-Ending Flags
Several apparently ordinary replies to Kurisu accumulate route flags. Only when every key condition is met does the return to Beta continue into Chapter 11.
Expand event details ↓
Late August 2010
After Hospitalization, Okabe Prepares Badges for the Lab Members
Okabe is hospitalized for the injuries sustained during the operation. After recovering, he prepares lab-member badges and checks on his friends in the new world line.
Expand event details ↓
Late August 2010
Okabe Reunites with the Surviving Kurisu in Akihabara
Okabe encounters the rescued Kurisu on the street. Although she lacks complete Alpha memories, she experiences déjà vu about him and the ways they addressed each other.
Expand event details ↓
Early August 2010
Kurisu Joins the Future Gadget Laboratory
After verifying the PhoneWave’s anomalous behavior, Kurisu becomes Lab Member No. 004 and contributes her neuroscience expertise to the research.
Expand event details ↓
Early August 2010
Decoding SERN's Jellyman's Report
After Itaru Hashida breaks into SERN, the lab reads records of secret human time-travel experiments and confirms that multiple subjects were found as gelified corpses.
Expand event details ↓
Around August 2, 2010
SERN Data Confirms Human Time-Travel Experiments
After the IBN 5100 unlocks the database, the lab confirms that SERN has conducted human time-travel experiments, leading Kurisu to admit that a time machine may be possible.
Expand event details ↓
Early August 2010
Kurisu Analyzes Kerr Black Holes and Lifter Conditions
From SERN’s failed experiments, the lab concludes that transmission destroys the human body and begins investigating why the PhoneWave can produce similar conditions.
Expand event details ↓
Early August 2010
The Lotto Six D-Mail
Okabe sends the Lotto Six numbers to his past self. A recording error prevents the jackpot, but the experiment still produces a measurable world-line shift.
Expand event details ↓
Early August 2010
The Lab Names D-Mail and Defines Its Limits
The members confirm that the PhoneWave can send phone text into the past, name the messages D-Mail, and record constraints such as length, segmentation, and activation time.
Expand event details ↓
Early August 2010
Moeka Becomes a Lab Member and Learns about D-Mail
Moeka comes to the lab to see the IBN 5100, overhears the D-Mail discussion, and is designated Lab Member No. 005 by Okabe.
Expand event details ↓
Early August 2010
Moeka Sends the D-Mail to Find the IBN 5100
Moeka outwardly claims that her message tells her past self not to replace her phone, but it actually causes her past self to obtain the IBN 5100 early. The computer consequently disappears from the shrine.
Expand event details ↓
Early August 2010
Itaru Hashida and Mayuri's D-Mail Tests Do Not Change the Outcome
Itaru tries sending RaiNet tactics to his past self, while Mayuri tries changing a meal, but neither test produces a recognizable difference in history.
Expand event details ↓
Early August 2010
Luka Sends a D-Mail to Change Sex at Birth
Luka sends dietary advice to his pregnant mother, hoping to be born female, and the resulting reconstruction rewrites the group’s memories of him.
Expand event details ↓
Early August 2010
Faris Sends a D-Mail That Saves Her Father
Faris sends a fabricated kidnapping message that changes her father’s itinerary and survival, rewriting the later development of Akihabara.
Expand event details ↓
Early August 2010
The D-Mail That Stops Suzuha from Leaving
Okabe sends a message into the past so that Suzuha stays for the gathering and misses her scheduled departure.
Expand event details ↓
Mid-August 2010 (after the delayed departure and thunderstorm)
The Delayed Departure Leaves Suzuha's Time Machine Incompletely Repaired
Because Okabe’s earlier D-Mail delayed Suzuha’s departure, the time machine is damaged during a thunderstorm. Itaru attempts repairs but cannot completely eliminate the malfunction.
Expand event details ↓
Around August 11, 2010
Okabe Confirms That the First Time Leap Succeeded
Okabe awakens in the lab before the raid and uses déjà vu, the members’ reactions, and the time difference to confirm that his memories have traveled back roughly forty-eight hours.
Expand event details ↓
August 11–13, 2010 (repeated time leaps)
Different Rescue Attempts Still Fail to Keep Mayuri Alive
Okabe repeatedly time leaps, trying to evacuate the lab, change their route, and prevent different causes of death, yet Mayuri still dies within roughly the same time limit.
Expand event details ↓
Mid-August 2010 (repeated loops)
Okabe's Judgment Deteriorates in the Loop after He Refuses to Undo the D-Mail
Okabe continues time leaping without undoing the message that stopped Suzuha from leaving. Repeating the same two days and deaths erodes his mental state and ethical judgment.
Expand event details ↓
Around August 12, 2010
Okabe Receives Escalating Threat Messages
Okabe receives a series of ominous anonymous messages. Their imagery escalates from hints of surveillance to the bloodied head of a doll.
Expand event details ↓
Around August 12, 2010
The 42-Inch CRT Is Identified as the Lifter
The lab discovers that experiments succeed only while the 42-inch CRT downstairs is switched on, confirming that it provides the lifter effect required by the PhoneWave.
Expand event details ↓
Mid-August 2010
Mayuri's Death Is a Convergent Outcome
After comparing multiple rescue attempts, Okabe confirms that Mayuri dies by different causes within a similar time limit, making her death a fixed result within the Alpha Attractor Field.
Expand event details ↓
August 13, 2010
The Time Leap Machine Is Completed
Kurisu combines memory compression with the PhoneWave to complete a Time Leap Machine capable of sending approximately forty-eight hours of memory into the user’s past self.
Expand event details ↓
Mid-August 2010 (after a time leap)
Suzuha Confirms That Itaru Hashida Is Her Father
By following the time-machine and badge clues, the group confirms that Suzuha came from 2036 and that Itaru Hashida is the father she has been seeking.
Expand event details ↓
Mid-August 2010
Okabe Receives Suzuha's Letter about the Failed Mission
Yugo gives the lab the letter Suzuha left behind, and Okabe learns in 2010 what happened to her between 1975 and 2000.
Expand event details ↓
Mid-August 2010 / later date unknown
Irreversible Reboot: Refuse to Undo
Okabe chooses not to send the undo D-Mail and remains on the 0.337187% world line while searching for another way to save Mayuri.
Expand event details ↓
Mid-August 2010 (reconstruction)
Send the D-Mail That Undoes Okabe's Intervention in Suzuha's Departure
Okabe undoes the message that stopped Suzuha from leaving, allowing her to depart on time and preserving the possibility of completing the 1975 mission.
Expand event details ↓
Around August 13, 2010
Kurisu Returns to the Lab and Accepts the World-Line Choice
After coming to terms with her history with her father, Kurisu returns to the lab and chooses to help Okabe perform the final action needed to return to the Beta world line.
Expand event details ↓
August 13, 2010
Kurisu Designs a Time Leap Machine That Encodes Memory as Data
Kurisu proposes compressing memories into data, sending them through the PhoneWave to a point up to roughly forty-eight hours earlier, and reconstructing them in the recipient's brain.
Expand event details ↓
August 13, 2010
Suzuha Warns Okabe Not to Trust Kurisu
After learning that the lab intends to conduct a time-leap experiment, Suzuha again warns Okabe that the Kurisu known in her future is extremely dangerous.
Expand event details ↓
Evening of August 13, 2010
Okabe Activates the First Time Leap after Mayuri's Death
After the lab is raided and Mayuri is shot, Kurisu helps connect Okabe to the Time Leap Machine. He sends his memories approximately forty-eight hours into the past.
Expand event details ↓
Evening of August 13, 2010
The Rounders Raid the Lab and Mayuri Dies for the First Time
Moeka leads armed Rounders into the lab and declares that the members know too much. Mayuri is then shot.
Expand event details ↓
Mid-August 2010 (after reconstruction)
Faris Reveals the Exchange between Her Father's Death and the IBN 5100
Okabe learns that Faris’s D-Mail saved her father, but that in the original history he had given the IBN 5100 to the Yanabayashi Shrine before his death.
Expand event details ↓
Mid-August 2010 / Omega world line
Isolated Jamais Vu
Instead of sending the undo D-Mail, Okabe uses an alternative message to preserve both Faris’s father and Mayuri, reaching an Omega world line without the original lab relationships.
Expand event details ↓
Mid-August 2010 (reconstruction)
Send the D-Mail That Undoes Faris's Wish
Faris chooses to let her father die as he did in the original history and sends a cancellation message, restoring the histories of Akihabara and the IBN 5100.
Expand event details ↓
Mid-August 2010 (after reconstruction)
Okabe Goes on a Date with the Female Luka
Okabe fulfills his promise and dates Luka, forcing both of them to face their feelings on this world line and the life that is about to be undone.
Expand event details ↓
Mid-August 2010 / later
Link of Corruption and Rebirth
Okabe chooses not to send the undo D-Mail, accepts the convergent death of Mayuri, and preserves his life with Luka on this world line.
Expand event details ↓
Mid-August 2010 (reconstruction)
Send the D-Mail That Undoes Luka's Wish
Luka agrees to send a cancellation message into the past, restoring the original outcome of her birth and preventing the IBN 5100 from being damaged in the childhood accident.
Expand event details ↓
Mid-August 2010 (after reconstruction)
The Truth about Moeka and FB Is Revealed
Okabe finds that FB still abandoned Moeka after the D-Mail rewrite and that she died by suicide, then continues the investigation and identifies Yugo Tennouji as FB.
Expand event details ↓
Mid-August 2010 (reconstruction)
Send a D-Mail from FB's Phone to Cancel Moeka's Action
Using FB’s phone, Okabe orders past Moeka to stop searching for the IBN 5100, restoring the history in which the shrine preserves the computer.
Expand event details ↓
Mid-August 2010 (after reconstruction)
The IBN 5100 Is Still Missing after Luka's D-Mail Is Undone
After reconstruction, Okabe confirms that the Yanabayashi Shrine still does not have the IBN 5100, proving that the removal caused by Moeka’s earlier D-Mail remains in effect.
Expand event details ↓
Mid-August 2010
Yugo Kills Moeka and Then Himself
After his identity as FB is exposed, Yugo shoots Moeka and then himself, trying to sever her tie to the organization and prevent Nae from being eliminated.
Expand event details ↓
Mid-August 2010
Nae Blames Okabe and Moeka for Her Father's Death
After witnessing her father’s death as a child, Nae concludes that Moeka and Okabe caused it, and her desire for revenge lasts until 2025 on this Alpha world line.
Expand event details ↓
Mid-August 2010 (memories from 2025)
Nae Returns from 2025 and Kills Moeka in 2010
Carrying her adult memories, Nae reaches 2010, kills Moeka in front of Okabe, and tells him that she will kill him fifteen years later.
Expand event details ↓
Mid-August 2010 (after world-line reconstruction)
The IBN 5100 Returns to the Yanabayashi Shrine and the Lab
After the cancellation D-Mail takes effect, Moeka no longer removes the IBN 5100. Okabe recovers it and brings it back to the lab.
Expand event details ↓
Around August 17, 2010
Okabe and Kurisu Acknowledge Their Feelings
Before the first D-Mail record is deleted, Kurisu understands that the world-line change will cause her death. She and Okabe confess their feelings and say farewell.
Expand event details ↓
Around August 17, 2010
Okabe Learns That the Final Deletion Will Cause Kurisu to Die
Once the IBN 5100 is restored, Okabe understands that deleting ECHELON’s interception record of the first D-Mail will return the world to Beta and restore the history where Kurisu dies on July 28.
Expand event details ↓
Around August 17, 2010
Kurisu Learns the Cost in Lives of Returning to Beta
Kurisu notices that Okabe stopped the SERN deletion and makes him reveal Mayuri’s repeated deaths and the fact that Kurisu dies on Beta.
Expand event details ↓
Around August 17, 2010
Mayuri and Kurisu Say Farewell before the Final Deletion
After learning of the repeated rescues and Kurisu’s cost, Mayuri seeks Kurisu out. They embrace and affirm that neither wants the other sacrificed.
Expand event details ↓
August 21 / arriving July 28, 2010
The First Attempt to Save Kurisu Fails
Okabe returns to July 28 but, amid the struggle, personally causes the result he had already observed and loses the will to try again.
Expand event details ↓
August 21, 2010
Arc-light at the Infinity
The Beta audio drama centers on Mayuri and the action she takes after Okabe's first rescue attempt fails, so that he can face fate once more.
Expand event details ↓
August 21 / intervention on July 28, 2010
Execute Operation Skuld
Future Okabe sends the operation into the past, instructing his earlier self to deceive the world, preserve the observed appearance, and keep Kurisu alive.
Expand event details ↓
After August 21, 2010
Arrive on the Steins Gate World Line
Kurisu and Mayuri both survive, and the time-machine paper does not become the direct trigger for the known war. Okabe reaches a world line with an unknown future.
Expand event details ↓
August 21, 2010
Suzuha Asks Okabe to Prevent World War III on the Beta World Line
Suzuha from 2036 appears at the Radio Building and asks Okabe to return to July 28, save Kurisu, and prevent the time-machine paper from leaving Japan.
Expand event details ↓
August 21, 2010
Okabe Opens the Video Mail from His 2025 Self
After the first failure, Okabe can finally play the video from his future self and learns that he must deceive his past self and the world rather than erase the observation.
Expand event details ↓
August 21, 2010
Suzuha Uses C204 to Explain World War III
Suzuha explains that the time-machine paper causes World War III on Beta and billions die. Her mission is to help Okabe save Kurisu and reach the Steins Gate world line.
Expand event details ↓
Departing August 21 / arriving July 28, 2010
Okabe Takes C204 to July 28 for the First Time
Encouraged by Mayuri and Itaru, Okabe enters C204 with Suzuha and travels from August 21 to the day of Dr. Nakabachi’s conference.
Expand event details ↓
August 21, 2010 (after the first rescue)
Okabe Returns to August 21 Traumatized by Killing Kurisu
After the failed rescue, Suzuha brings the injured and broken Okabe back to August 21. He refuses another attempt, believing he will only repeat Kurisu’s death.
Expand event details ↓
August 21, 2010
Mayuri Restores Okabe’s Will to Try Again
Mayuri prevents Okabe from giving up completely and reminds him how often he has stood up for his friends. He becomes willing to inspect the previously unreadable video mail.
Expand event details ↓
August 21, 2010 (operation briefing)
Okabe Realizes the Metal Upa Saves the Paper from the Airport Fire
The future video explains that the Metal Upa inside Nakabachi’s envelope triggers security screening, keeping the paper out of the cargo-hold fire before it reaches Russia.
Expand event details ↓
Departing August 21 / second arrival on July 28, 2010
Okabe Returns to July 28 for the Second Time
Knowing the full operation, Okabe boards C204 with Suzuha again to replace the Upa and rescue Kurisu on the same date.
Expand event details ↓
August 21, 2010
Okabe Refuses to Attempt a Second Rescue of Kurisu
After the first rescue fails, Suzuha asks Okabe to depart again immediately. Traumatized by having stabbed Kurisu himself, he refuses, and Mayuri does not force him to stand again.
Expand event details ↓
Autumn through November 2010
Okabe Seals Away Hououin Kyouma and Receives Treatment
After abandoning the second rescue, Okabe returns to university life, takes anti-anxiety medication, receives psychotherapy, and deliberately avoids time-machine research.
Expand event details ↓
Late November 2010
Maho Hiyajo and Alexis Leskinen Present an Artificial-Intelligence Lecture
While helping at a university seminar, Okabe meets Maho Hiyajo and Professor Alexis Leskinen, Kurisu’s colleagues at Viktor Chondria University.
Expand event details ↓
Late November through December 2010
Okabe Becomes an Amadeus Tester
Through his smartphone, Okabe speaks with an Amadeus personality built from Kurisu’s memories and gradually begins to overlap the system’s responses with the woman who died.
Expand event details ↓
Around November 28, 2010
The Seminar Publicly Demonstrates Amadeus Kurisu
At the artificial-intelligence seminar, Maho and Alexis Leskinen demonstrate Amadeus. Okabe learns that the system preserves Kurisu’s memories and personality responses from before her death.
Expand event details ↓
Winter 2010
Okabe Interacts with Amadeus Kurisu
After abandoning the rescue, Okabe encounters Amadeus, an AI based on Kurisu’s memories, intertwining grief, artificial-intelligence research, and competition over time-machine technology.
Expand event details ↓
December 2010
Luka Brings the Amnesiac Kagari Shiina to the Lab
Luka brings in an amnesiac young woman who resembles Kurisu. Suzuha identifies her as Kagari Shiina, a traveler from 2036 who disappeared in 1998.
Expand event details ↓
Winter 2010 to early 2011
A Russian Experiment Triggers Reading Steiner
An overseas time-machine experiment briefly shifts the world line. Through Reading Steiner, Okabe observes an anomalous fragment of Alpha Attractor Field history in which Kurisu is still alive.
Expand event details ↓
Winter 2010 through early 2011
The Group Traces the Song in Kagari’s Memory
A familiar song travels backward through the memories of Mayuri, Yuki, and Kagari, becoming a clue to Kagari’s identity and missing past.
Expand event details ↓
December 15, 2010
Okabe Decides Whether to Turn Off His Phone
After speaking with Amadeus Kurisu at the Yanabayashi Shrine on December 15, Okabe’s choice to turn off his phone becomes the division between the two main route trunks of 0.
Expand event details ↓
December 15, 2010
The Amadeus Team Is Attacked in a Parking Garage
As Okabe, Maho, and Alexis Leskinen leave their meeting, armed assailants attack them. Unidentified gunfire then kills the attackers.
Expand event details ↓
December 24, 2010
The Lab Holds a Christmas Party
The lab members and their friends try to preserve ordinary life with a Christmas party, while the relationships among Maho, Yuki, Suzuha, and the others gradually intersect beneath the apparent peace.
Expand event details ↓
Around January 1, 2011
An Armed Group Attacks the New Year Gathering
An unidentified armed group attacks while the lab members are gathered. Because no PhoneWave experiments occurred on Beta, the motive points to a separate struggle over the time machine and Kurisu’s memory data.
Expand event details ↓
January 2011
Maho Safeguards Kurisu's Laptop
Maho tries to decrypt the laptop Kurisu left behind while fearing that its research could fall into military hands. Okabe must decide whether to intervene in time-machine theory again.
Expand event details ↓
Early 2011
Twin Automata
Facing Kurisu’s research, Amadeus, and her own worth, Maho decides to stop defining herself only through comparison with the genius Kurisu.
Expand event details ↓
Early 2011
Recursive Mother Goose
Kagari recovers her memories of Mayuri and the song, finding a place in 2010 where she can begin rebuilding a family relationship.
Expand event details ↓
Early 2011
Delete Amadeus Kurisu's Memory Data
Okabe realizes that Kurisu’s memory data will become central to the time-machine arms race and works with Maho to delete it, causing another world-line change.
Expand event details ↓
2011 (after returning from 2036)
Promised Rinascimento
Back in 2011, Okabe restores Hououin Kyouma and uses knowledge gained from the failed future to reorganize his allies, proving that resolve and information can accumulate across world lines.
Expand event details ↓
Mission in 2011 / arrival in a much earlier era
Vega and Altair
Mayuri and Suzuha's time-machine mission successfully carries the necessary resolve back to 2010, but fuel and coordinate problems leave the travelers themselves stranded in a distant era.
Expand event details ↓
January 2, 2011
The January 2 Amadeus Call Branch
Near the end of Orbital Eclipse, whether Okabe answers Amadeus Kurisu after Maho’s call determines entry into Antinomic Dual or Twin Automata.
Expand event details ↓
January 15, 2011
The January 15 Amadeus Call Branch
After entering Antinomic Dual, whether Okabe answers, rejects, or ignores the January 15 Amadeus call at the lab determines entry into Promised Rinascimento or Recursive Mother Goose.
Expand event details ↓
Late January 2011
Gehenna's Stigma
After answering the decisive call from Amadeus, Okabe enters a failed branch. With Alexis Leskinen controlling the flow of information, he is unable to prevent the coming war.
Expand event details ↓
January 23, 2011
The January 23 Amadeus Call Branch
In Pandora's Box, whether Okabe answers a call from Amadeus Kurisu on January 23 determines whether the story enters a failed ending or continues along Mayuri and Suzuha's main branch.
Expand event details ↓
Summer 2011
Mayuri Learns the Cost of Her Survival
Mayuri overhears Okabe and Maho arguing and finally learns that she repeatedly died in Alpha Attractor Field world lines—and that the present history exists because Okabe gave up on saving Kurisu.
Expand event details ↓
Summer 2011 / destination: August 21, 2010
Mayuri and Suzuha Depart from the Radio Building Rooftop
Amid an armed struggle for the time machine, Mayuri and Suzuha launch for the moment after Okabe's first failed rescue in 2010, so that Mayuri can ensure her past self gives Okabe the crucial slap that sends him back into action.
Expand event details ↓
2025
Two Messages Across Time Are Recorded in 2025
Future Okabe and his companions record the Operation Skuld video for his 2010 self and prepare the coordinates needed to reach Suzuha and Mayuri after their 2011 departure.
Expand event details ↓
Departure in 2025 / arrival around 18,000 BCE
Milky-way Crossing
After completing the operational information sent into the past, Okabe departs 2025 by time machine and travels into the distant past to recover the stranded Mayuri and Suzuha.
Expand event details ↓
2025
Nae Captures and Kills Okabe in 2025
Fifteen years later, Nae has joined the Rounders and captures Okabe, taking revenge on one person she holds responsible for her father’s death.
Expand event details ↓
2025 → 2010
Nae Repeatedly Time Leaps Back to 2010
Nae performs more than 2,700 time leaps, sending her 2025 memories backward in stages until they reach her 2010 self.
Expand event details ↓
Recorded in 2025 / played August 21, 2010
Future Okabe Explains Operation Skuld
Okabe in 2025 tells his 2010 self not to deny the three weeks he experienced, but to deceive his past self and the world by preserving the observation of Kurisu collapsed while actually saving her.
Expand event details ↓
2036 / memories leap back step by step to 2011
Okabe Recovers His Memories in 2036
In a failed future, Okabe’s body remains unconscious for years. His allies restore preserved memory data from 2011, allowing him to awaken in 2036.
Expand event details ↓
Multiple Chapter 9 loops (order unresolved)
Sources Conflict over the Order of Deaths in Chapter 9
Public chapter summaries disagree about the order in which Moeka, Yugo, and Nae die or witness events across different loops. This site preserves the conflict rather than merging them into one timeline.
Expand event details ↓