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Eito Aotsuki is the secondary antagonist of the 2025 RPG, The Hundred Line -Last Defense Academy-.
He is one of the 16 students abducted by Sirei to enlist in the Last Defense Academy and defend humanity from invaders. In the beginning of the game, he is the smart and supporting friend of the cast, a level-headed and rational person describe to be a 'trusted ally' to Takumi Sumino. Through progression of Route 0 however, it is revealed that he was a traitor. Onwards through routes after Takumi travels back in time, he becomes a nuisance to the cast and especially to Takumi. Going so far as to side with the enemy.
He is voiced by Takahiro Sakurai in the original Japanese and by Nezar Alderazi in English.
History[]
Background[]
Since he was born, Eito has seen humanity as hideous monsters. This was diagnosed as a unnamed cognitive disorder early in his life. Despite hoping his symptoms would improve, they never did and so Eito isolated himself as he grew up; immersing himself in history books and literature. Upon learning about the history of wars and discrimination by the human race, he decided that all of humanity must be annihilated. It was his duty as the only righteous human. To start this, he murdered his family. He then focused on studying to pursue a career in politics so he could take down the Tokyo Residential Complex from a position of power.
Due to chronic health issues, Eito spent a lot of his life in the hospital. It is implied that he did not have many proper interactions with other people, as within the story he struggles with managing social interactions, and states that it has been a long time since anyone has called him their friend. He did not have anyone he wanted to protect before he came to the Last Defense Academy.
Hearing that the Last Defense Academy was protecting all of humanity made Eito realize that he could finally achieve his life-long dream of destroying the human race. Eito initially planned to kill everyone at the academy as quickly as possible to return to the Tokyo Residential Complex. Realizing that reinforcements would likely be sent, he decided to play the long-game and lead them astray from the shadows.
However, in the "True Ending" it’s revealed that his entire life was a false memory made by Sirei. In truth, he is a clone created from an infant Futurum, with his disorder being the result of an error.
Personality[]
Eito Aotsuki is the steadfast "voice of reason" among his peers, always approaching situations with a level-headed and rational mindset. He deeply values his friends and isn't afraid to express his feelings, no matter how corny or embarrassing they may sound. His sincerity often catches others off guard, leaving them flustered by his unexpectedly cheesy declarations about friendship and loyalty.
Despite his warm and rational demeanor, Eito secretly perceives all of humanity as grotesque, hideous creatures—a deeply rooted perception born from a lifelong cognitive disorder. Their appearance is unbearable to him: their faces distort in his mind, their skin seems malformed, and each person emits an overwhelming, uniquely foul stench that clings to his senses. Their voices scrape against his ears like metal on glass, becoming intolerable with time. Whenever he is near others—especially during prolonged interaction or moments of perceived friendship—he experiences intense, stabbing pain in his chest, as though his body itself is rejecting their presence. He often grips his chest tightly in such moments, not out of sentiment, but to keep himself composed. Beneath his mask of logic and camaraderie lies a singular, consuming goal: the eradication of humankind.
However, playing the game long enough does show a more positive side of Eito. In the "Goodbye Eito" route, it’s revealed that he secretly did appreciate Takumi's friendship due to his isolation and after being defeated, gives up his life to save his classmates from destruction. In the All Truths Revealed/Second Scenario: Farewell Last Defense Academy route, after learning that his entire life was fabricated by the Exodus Project, he vows to avoid killing his classmates and get revenge on the Project.
Background on his crimes[]
In Route 0/the first playthrough, his first act of deceit was to insist that no one should fight the School Invaders. He murdered Sirei on the night of the second day in the gym to prevent the class from learning the truth about their situation. This was done in a single strike while Sirei was distracted, because of the bombs implanted in the members of the Special Defense Unit. When disposing of Sirei's body outside of the Wall of Fire, he found himself in a perilous situation and would have died had Takumi Sumino not saved him. Eito later killed Hiruko Shizuhara while she was asleep in her room and absorbed her Hemoanima to increase his power.
Eito and Gaku Maruko held a barbeque that was supposed to build the bonds between the members of the team. However, Eito secretly poisoned the food with sleeping pills and used this time to destroy the food supply of the Academy. While exploring for more supplies, Takumi was knocked out and left for dead by Eito. When Takumi returned, along with the members of the Second-to-Last Defense Academy, Eito knew that he was his "true nemesis."
While the fake Moko Mojiro was attacking the school, Eito released Eva who was currently held prisoner in the courtyard of the Academy. On the mission to rescue Ima Tsukumo at the Invader's base, he was the first to find Eva, currently being held captive. He made use of this opportunity and absorbed her Hemoanima, suggesting that it was instead her being executed for managing to be captured by the enemy.
After overhearing that Nozomi Kirifuji had a secret about her past to share with Takumi, he decided to eavesdrop on them by hiding under Takumi's bed that evening. He heard everything about how Nozomi was at the Academy of her own free will and decided to leak the information in order to turn the class against her. This quickly spread, with no one able to track the source of the information and greatly damaging Nozomi's reputation within the Academy
In "Cult of Takumi" route, Eito, affected by Takumi's enhanced Hemoanima enough to bypass his cognitive disorder, is compelled to appease Takumi and managed to cut off four Commander heads as an apology for betraying the team. Eito add ons that he honestly would've brought V'ehxness head with him had her not having her guard up all the time.
In the same route, ending "Living Idol", the player can make Takumi pick Nozomi to stop with brainwashing his friends. The result of this went as Eito and the rest of the cast give Takumi a paralysing drug used for torture where his whole body goes numb in place of the cure that he was led to believe, only being able to blink and breathe. The classmates and Eva then beat Nozomi to death in front of Takumi. In the ending, despite not wanting a reward, Eito was given his reward of intimacy with a paralysed Takumi by the other classmates. From a QnA with Kodaka on Weibo, it is likely that Eito may have solely chosen to spend time with Takumi[1] as a living idol. Whether he acted upon what his classmates deemed his reward is left to interpretation. Everyone including Eito asides from Takumi, Nozomi, Sirei and Nigou were under the influence of Takumi's enhanced Hemoanima, so anything done should be taken with dubious consent on that part.
Trivia[]
- He and Takumi are the only characters to be explicitly given an age, in their case, 17.[2]
- In his concept art, the text on his clothing can be seen, which is written in Luxembourgish.
- Similar to Shouma, Eito's design is based on a Danganronpa's character concept art. In his case, it is based on an original design for Nagito Komeada.