• Viktor Chondria University develops the Visual Rebuilding technology.
• AH Tokyo General Hospital is owned by N.O.Z.O.M.I. and does experiments to try to awaken Gigalomaniacs in its basement, as part of Project Noah.
• Ayase Kishimoto is institutionalized at Ark Heart Medical and subjected to torture to draw out her abilites.

• The Y2k Bug (Millenium Bug) occurs.
• Okabe struck with a fever between the end of 1999 and the beginning of the year 2000.

• Rimi and her parents are involved in a car crash which kills Rimi's parents and leaves her as the sole survivor.
• Because of the incident Rimi sees something that resembles a DI-Sword and is subsequently captured by N.O.Z.O.M.I.

• Rintaro Okabe becomes the self-proclaimed "Mad Scientist Hououin Kyouma".
• SERN: succeeds in mini black hole creation.

1. Nanami Nishijou regularly visits the original Takumi at AH Tokyo General Hospital for years to check up on him and confirm that he was doing well on behalf of their parents.
2. The original Takumi saves Rimi Sakihata from N.O.Z.O.M.I.'s Experiments.
3. Noah II is created by Nozomi.
4. Uki Yamazoe stops coming to school.
5. Yukitaka die in a plane crash.

• 1, 2, 3: ChäoS;HEAd
• 4: ChäoS;Child
• 5: Steins;Gate

1. Kurisu is admitted to the Institute of Neuroscience at Viktor Chondria University.
2. Moeka attempts suicide and responds to a Rounder recruitment mail.
3. The researcher Issei Hatano decided to volunteer his wife for the prototesting of Noah II and sent Sena to live in the psychiatric hospital Ark Heart Medical.

• 1, 2: Steins;Gate
• 3: ChäoS;HEAd

1. Rintaro Okabe and Itaru Hashida are classmates (in 2nd year, different classes).
2. Takuru Miyashiro and Serika Onoe encounter Senri Minamisawa at the basement of AH Tokyo General Hospital during an experiment.

• 1: Steins;Gate
• 2: ChäoS;Child

1. Sena Aoi tries to stop the experiment started by her father Issei Hatano, but the company thinks of this as the perfect conditions to test Noah II. Sena’s mother looks after the corpse of her daughter for two years, thinking she is still alive.
2. The original Takumi realboots Takumi Nishijou, the effort of such a delusion puts him in a coma for a year and a half, Rimi continues to visit him.
3. SERN official announcement of start of LHC experiments.
4. Kou Kimijima puts Airi Yukifune into cryogenic sleep.

• 1, 2: ChäoS;HEAd
• 3: Steins;Gate
• 4.Robotics;Notes

• Kou Kimijima starts the Airi communication interface AI up on the IRUO. servers.

• Misaki Senomiya finds a phone lying on the ground and encounters Airi on it.
• A few days later, Airi takes Misaki to the laboratory to meet Kou Kimijima.

• FaithWorks Limited begins selling Gero Froggies in order to manipulate and observe the GE rates and biorhythms in Shibuya.

• Kozue Orihara moves to Shibuya with her family.
• 09/01-11/04, New Generation Madness.

• Kurisu become acquainted with Maho Hiyajo.
• Maho considers herself as Kurisu's rival

• Yua and Mia swap clothes.
• Real Yua dies in the Group Dive case, Mia convinces herself that she is Yua and the one who died Mia.

• Mamoru Suwa, using a porter device, creates a delusion for Takumi at the crime scene of the third case Cruc-affixion.
• Rimi Sakihata starts becoming closer with Takumi.

• Takumi goes downtown to the Shibuya Crossing, but somehow it is entirely deserted too. Then, he spots Shogun, who comes up to him and introduces himself as Shogun. He tells Takumi that he must awaken as soon as possible or else many more people will die.
• FES/Ayase talks to Takumi about DI-Swords and explains that they are a power that people known as Gigalomaniacs possess.
• Takumi finds out about the seventh New Gen case, DQN Puzzle.
• Rimi and Takumi look up to the roof of the base and see Sena and Kozue. Sena confirms that Takumi had written the Ir2 formula.
• Takumi goes to the roof of the O-Front building downtown as instructed by "Shogun", desperate to save his sister Nanami’s life. He finds his DI-Sword but he cannot fully manifest it.
• Takumi charges at "Shogun" on the O-Front building, furious at him for having hurt Nanami. Confused, he only finds a wheelchair and a Darth Spider mask where "Shogun" should have been.
• Rintaro Okabe meets Sena Aoi on Shibuya Station. (ChäoS;Gate)
• Suwa kills Ban by shooting him on the Tokyo General Hospital roof.
• Yua, following Ban, sees a delusion of Mia who tells her that Yua is actually Mia. "Yua" awakens as a Gigalomaniac. Ayase appears and saves "Yua".

ChäoS;Child

• Takuru, Serika, Senri, Hinae and Hana are affected by the Third Earthquake and obtain their peculiar Gigalomaniac Power.
• Senri is escorted by scientists of the facility, while walking through all the wreckage, she finds Nono, dying under heavy rubble, and tries to rescue her in a desperate attempt, to no avail.
• Senri wishes that she herself were Nono Kurusu and when she looks at her reflection on a piece of metal, finds that she looks exactly like Nono, so she decides to hide the real Nono's body.
• Hinae found her brother under a rubble but failed to move it away.
• Takuru Realbooted Serika and enters a long coma.

ChäoS;HEAd

• Takumi saves Ayase and Yua from underneath the rubble, Momose asks for information about Ban and Nanami appears awakened as a Gigalomaniac.
• Sena finally finds Issei Hatano but he protects Sena from a bullet shot by Suwa, Takumi used his Gigalomaniac powers to switch places with Suwa whereupon Suwa becomes impales by a myriad of stakes.
• N.O.Z.O.M.I. is dealt the destruction of the Noah II when Norose Genichi is killed by Takumi Nishijou.

• The Robotics Research Association wins the ROBO-ONE with their TanegashiMachine 3.
• Kimijima reveals to Misaki the truth about Airi Yukifune and explains how he works under the Committee of 300.

• Moeka is fired from Arc Rewrite.
• Nae gets into a traffic accident, but is saved by Moeka.
• Tennouji accepts Moeka as part-timer at the Braun Tube Shop.
• Makise Kurisu spends two weeks "reverse studying" at a girls high school.
• PhoneWave (name subject to change) is completed, and a time machine function is discovered by accident.

• Mayuri loses her plastic Upa.
• Kurisu reports Nakabachi for stabbing someone.

• Okabe gets off of the time machine bloody and moves to this world line from 1.130205β. The time machine disappears. Okabe is hospitalized.
• The PhoneWave (name subject to change) is dismantled.
• Nakabachi paper is burned, Nakabachi is arrested in Russia.

• MF Anemone Incident, Kaito and Akiho are the only ones who suffered side effects from a chronic syndrome known as Elephant Mouse Syndrome, which periodically causes their time perceptions to change for a short period.
• Misaki tries to stop Kimijima; this results in her bashing his head in with a bat, killing him.
• The unfinished AI version of Kou Kimijima starts haunting her relentlessly after a month, reminding her of the murder she committed. Her mental state deteriorats, she crumbles and moves to Tokyo to work at ExCo as Kou Kimijima’s pawn.

• Okabe follows a girl in a taxi, she resembles Suzuha in both her looks and voice.
• Okabe admits that she resembles an old friend who he will meet again in seven years, which causes Yuki Amane to mention that a psychic once told her that she would get married and have a daughter in seven years.

• Okabe receives an email from Kurisu on his birthday.
• Kurisu is busy every day in Arizona.

• Winter Comima Day 1
• Itaru meets Yuki for the first time.

• Kurisu arrives in Japan for a press conference and reunites with all the members of the Future Gadget Laboratory.
• Okabe begins to have increasingly seeing lengthier durations of visions of some of his previous experiences on other world lines.

Second Iteration

• Kurisu is contact by the visitor from before, revealed to be Suzuha Amane, who came from the future using a time machine that the future Kurisu built.
• Okabe does not allow Kurisu to use the time machine, equally urging her to forget him.

• A mysterious visitor shows up at Kurisu's hotel room, telling her to remember three things: a cell phone, a microwave oven, and SERN.
• Okabe suddenly disappears in front of Kurisu. Furthermore, no one else seems to remember Okabe ever existed, with Kurisu herself barely retaining a faint memory.

• Kurisu uses the Time Leap Machine to go back to the night of August 3.

• Kurisu is once again approached by Suzuha and eventually convinces her to go in the time machine together.

Robotics;Notes

• Kurisu Makise meets Mio Kunosato who was invited to the Viktor Chondria University Institute of Neuroscience.
• Kurisu hands Kunosato a form giving her permission to audit classes, and limited access to the university's servers.

ChäoS;Child ~Children Collapse~

• Mio and Kurisu encounter Claire Coleman, who serves as the head of a large neuroscience research institute, together with a young girl named Beth.
• The secret experiments at the Institute are supposed to make it easier for the children to see their Di-Sword.
• Beth and Jake died during one of the Committee experiment, Mio fiercely despises the Committee and the existence of Gigalomaniacs.

1. SERN freezes time machine development research and transitions to BHB bomb development research.
2. Noah IV, Noah’s Ark, an inferior copy of Noah II was developed.
3. Toshiyuki Sawada joins an Anti-Committee group, known members are S.Braun, DaSH and Lightning-Fast Neidhardt.
4. Serika Onoe starts hunting down Gigalomaniacs with Wataru Sakuma to reincarnate the New Generation Madness as a game for Takuru Miyashiro. This did not affect Wakui plans for a "One World Order" system in Shibuya.
5. After the Shibuya earthquake, Uki is put in charge of taking care of the remaining patients of the hidden facility under the AH general hospital.

1. The largest Solar Storm in recorded causing electronic failures (Crash of '15).
2. Minami Furugoori’s brainwashing comes undone. Her still brainwashed coworkers attack her and kill each other. Minami Furugoori flees and is last seen on Tanegashima.
3. Mizuka is involved in a motorcycle accident which left her disabled from the waist down, years later, she would receive a present from her old friend, Misaki. The present was a Power Suit gear for her legs.
4. Itou Shinji is mind-controlled with orders to message himself.

• 1, 2, 3: Robotics;Notes
• 4: ChäoS;Child

ChäoS;Child

• The Newspaper Club fails to interview Watabe cause he becomes the victim of the fourth case, dying as soon as he arrives on stage during the Biho Gakuen Cultural Festival.
• Takuru, Itou, Serika and with the help of Kunosato, found a research facility with evidence about Gigalomaniac experiment, before them retrate, they brought Uki to stay at Aoba dorm.

• Serika kills Nono after a fight in the school roof, Takuru rushed to the school and find Serika standing over Kurusu's dead body.
• Takuru became the main suspect for the murders and a warrant was issued for his arrest.
• Takuru went to Serika's house in order to seek out answers, Kunosato brought up Serika's lack of records prior to the earthquake and helped Takuru to realize that he created her using his powers.
• Serika arrived at Freesia and reveal and explain the further with Sakuma behind the Return of New Gen.

• Daru at the lab consents to Kunosato Mio’s request for refuge.
• At the Hikariwo, Takuru apologized to Serika and broke out of Sakuma's delusion. Then Takuru continued his fight against Sakuma and used his DI-Sword to kill him.

• Takuru had been suffering from Chaos Child Syndrome, with Kunosato, they finally able to get a lead when Serika Onoe, returned to Shibuya looking for answers over her lost memories.
• Before the Rorschach video could be made Shuichi Wakui arrived to the facility and threatened Takuru, Serika and Kunosato with his gigalomaniac powers.
• Takuru promised to Wakui that if he ever regains his gigalomaniac powers while in prison he will willingly allow the committee to study him: Wakui accepted this deal.
• Takuru, who recovered from Chaos Child Syndrome, was able to break the Delusion Synchronization from Nono Kurusu, Hinae Arimura, Uki Yamazoe and Hana Kazuki.
• Eight months later Takuru was officially sent to prison. On his way out of the hospital he passed Serika and they both acted as if they didn't know the other.

• The Mobile Battler Gunvarrel anime’s final episode, which bears an uncanny resemblance to Project Atomm, hit the news.
• Kaito unlock the third report
• The IRUO. software Kona uses to detect cheaters gets infected with a virus

• GunBuild-2 construction is complete by using the monopole motors.
• Kou Kimijima kills Mizuka Irei by making her Power Suit go berserk.

• Akiho and Kaito meet the Delusion of Misaki, a mixture of the “Kagome, Kagome” signal and a high-frequency is used to disable all robots in the exhibition hall.
• Akiho watches in disbelief as Misaki boards the SUMERAGI and begins wreaking havoc within the Tokyo Expo, by destroying the other robots.
• A delusion of the Grand Obelisk is emitted near the Expo Arena, Sawada gives to Kaito Yashio Noah IV and finds an allies in him.
• Misaki Senomiya and crew take over the Tanegashima Space Center and Rocket Launch Site.
• Kimijima uses a mind-controlled Airi Yukifune to attempt to stop Kaito, Akiho, Sumio, and Mitsuhiko from flying to Tanegashima.
• Okabe(?) convenes Labmems, Operation Lævateinn begins - Kurisu is unable to participate as she is in the US, Nae rescues Frau Koujiro.

• Daru provides DG297 3rd EDTION ver.4.11 & antivirus; Nae is in charge of TNSC Capture B squad rush troops.
• Kimijima and Misaki Senomiya in the second SUMERAGI model attempt to launch a rocket and try to stop the Robot Research Club with them Super-Gunbuild 1.
• Kaito Yashio erases Kimijima from the IRUO. network.