Himiko attempted to get Angie's attention, but the door into her lab was locked, worrying the trio. However, Maki failed to assassinate Kokichi after Kaito took the shot for him. comics, ndrv3, oumasai. He was suspicious of her ever since the first chapter, as during the first trial he called her the most suspicious and said she looks like she can definitely kill someone. how'd you know?! Later, Maki came back with the antidote and passed it to Kaito through the small bathroom window, but Kokichi immediately stole it and supposedly drank it, much to Kaito's anger, and Maki's horror due to there only being one antidote. He once told Kaede that he is more nervous around friends who share too much than strangers. Aware of her feelings for Kaito, Kokichi uses this to his advantage, infuriating her by insulting or physically hurting him. Himiko, however, does not understand what he's talking about. He also wanted to get rocket punched by K1-B0, but the robot stated he doesn't have such function, which made Kokichi very disappointed and wonder why the robot even exists. However, none of his claims have been confirmed, and the other students think he's either lying or delusional. Throughout the killing game, Kokichi and Maki constantly antagonized one another. The body discovery announcement played and everyone else rushed to Angie's Research Lab. Kaede was confused by Kokichi's childish personality and his unusual Ultimate talent. In his state of despair, Kokichi convinces Gonta that being dead without knowing anything is the best option for everyone and offers him a plan to kill Miu now and then kill everyone else with the Class Trial. Out of anger, she gave Kaito a swift punch to the gut, causing him to let go and leave the séance room. When they enter the On his whiteboard, Kokichi describes K1-B0 as "weird", and considering his intelligence it's possible that he was paranoid and suspicious of a robot in a killing game setting that logically should be for humans. However, after some of the other students started to accuse Himiko as the potential culprit and she turned apathetic and suicidal, Kokichi later appeared to try to make her feel better by happily congratulating her for her proven innocence and complimented her decision to use the middle room as an extremely important clue. Everyone was worried about what this would mean, aside from The next morning, Kokichi was with everyone else in the dining hall once again, happy that the Killing Game had supposedly ended. He says he wants to ruin the killing game even if it costs him his life, thus making its viewers taste "true despair" and honor the memory of those who died. Kokichi sadly complied, telling him that he didn't need to make such scary threats. When Maki and Shuichi noted that he went to the rooftop himself, Kokichi suddenly got anxious and stuttered, but quickly calmed down after he used what Himiko said to try to hide the fact that he went to the rooftop.

Kokichi often tries to ask other people to join his organization, claiming it would have multiple benefits such as having all the food, sleep and sex you can wish for. Much later, it's seen that Kokichi has the life-like statue of Rantaro made by Angie hanging upside down next to his bed, as a part of the evidence pieces he has hoarded. He also tries to keep Kaito away from Shuichi, claiming that Kaito and his beliefs are a bad influence on Shuichi and that Shuichi is the only one who can save them. However, Kokichi also understands that they simply have different views due to coming from different backgrounds and has stated that he doesn't wish for Kaito to change because his current attitude makes things interesting, showing that he does appreciate Kaito in a way. He told everyone that he wouldn't interfere with them any longer before leaving the gym, along with Miu's memento for them to use, the electrohammers. Furthermore, he didn't show any villainous behavior, and instead, he offered to go check if the Exisals are still nearby when the other students showed worry about it. The loud noise created by the sudden impact alerted everyone else in the virtual world. It is stated that his lithe body significantly helps him to do this and he can also swiftly run away if noticed. He then told her that he is only warning her because he actually cared about her, but also told her not to come crying back to him if things didn't go her way. Tenko especially dislikes Kokichi due to his habit of bullying Himiko. Much later on in Chapter 5, after the remaining participants cleared the However, the true Mastermind, in order to get the remaining survivors at the time to continue the Killing Game, decided to connect everyone's memories of The Gofer Project to the story of In the mastermind's rush, however, they accidentally overlooked slight inconsistencies and plot holes when linking both stories together, such as "Ultimate Despair" only referring to While Kokichi did remember the Ultimate Hunt in Chapter 2, his and everyone else's funeral in Chapter 3, the meteorite impacts, and the state of the outside world in Chapter 4 thanks to the Flashback Lights, he ultimately has no complete recollection of the event, as he was not present when the complete memory about The Gofer Project was triggered by the Kokichi was later found in one of the classrooms on the first floor by Kaede and Shuichi. Kaito reassured her that she would be fine and told her to leave. Kokichi got increasingly frustrated when Gonta was unable to argue back and seemed genuine when he stated that it hurts his heart to persecute Gonta so much. Kaito even once called him naive, telling him that During Chapter 4, in the Neo World Program created by Miu, Kokichi persuades Gonta to murder Miu because he cannot do it himself due to Miu's programming. He can also notice when people are lying to themselves, which is a trait he considers "not good".