Assassination Classroom: Graduation

Six months into their final year, Class 3-E faces a nearly impossible mission: to outwit Koro-sensei, whose fate-bound threat to blow up the Earth casts a shadow over every rehearsal and test. The students develop plans and experiments, hoping to secure a future that does not hinge on a drastic kill. The tension is constant as graduation day approaches and every decision could alter countless lives.

During the school festival, assistant teacher Karasuma pressures the class to push themselves to their limits, emphasizing timing and precision. He notes that Koro-sensei could be distracted by the festivities, creating a fragile moment of potential vulnerability. The students weigh risky strategies against the clock, knowing failure could be catastrophic.

Red Eye's presence sharpens the sense of danger: a government-aligned assassin looming over the students’ efforts. He serves as a stark reminder that the clock is always ticking and that both sides are playing for keeps. The threat remains constant as plans and counterplans unfold.

At the festival’s climax, Kaede Kayano unveils herself as Akari Yukimura, a child actress with a vendetta against Koro-sensei. Her revelation is motivated by memories of her sister Aguri Yukimura, a former trusted mentor who was caught in the Reaper’s orbit and tragedy. The class confronts a personal price for their mentor’s existence.

Nagisa Shiota steps in to defuse the crisis with a subtle, intimate distraction, buying time for a safer reassessment. The moment cools the immediate danger and hints at Nagisa’s growing leadership within Class 3-E. It marks a turning point in how they handle high-stakes pressure.

Koro-sensei narrates his origin as the Reaper, a human assassin famed for strength and cunning. He explains how he became a guinea pig in a rogue operation run by Dr. Kōtarō Yanagisawa and how Aguri Yukimura’s faith shaped his resolve. The past hardens his vow to protect his students, even at great personal cost.

Yanagisawa’s moon-based experiment spirals out of control, threatening Earth. Aguri Yukimura sacrifices herself to save him, dying in the Reaper’s arms and shattering the life they shared. The tragedy crystallizes the Reaper’s resolve to teach Class 3-E and shield them from chaos he once unleashed.

Nagisa, Karma Akabane, and Itona Horibe obtain a file from Yanagisawa’s labs that supposedly maps an antidote to Koro-sensei. The plan appears as a peaceful alternative to killing, but it is later revealed to be a setup by Yanagisawa. The team continues to push forward, despite the danger and tension mounting around them.

The stolen file is revealed as a ruse engineered by Yanagisawa, exposing him as the true antagonist. He injects artificial tentacles into himself, transforming into a monstrous form capable of overpowering Koro-sensei in close combat. Akari Yukimura defends her own creation with courage, but suffers injuries in the process.

Koro-sensei unleashes a bomb-like intervention to destroy Yanagisawa and his artificial tentacles. He then performs a surgical repair on Akari, healing the wounds she sustained defending the Reaper’s legacy. The scene confirms that even the most formidable mentor has limits and a painful price.

In the aftermath, Koro-sensei pleads with Class 3-E to consider the possibility of killing him to free themselves from the threat he represents. Tears fill the room as Nagisa Shiota volunteers to bear that burden, signaling a pivotal turning point for the class. The moment reframes what it means to protect the students’ future.

Years later, Nagisa becomes a teacher at a school for delinquents, guiding youths who have walked crooked paths. When a defiant student tries to intimidate him, Nagisa responds with a quiet, unwavering menace that demonstrates the restraint and discipline he learned with Koro-sensei. The scene anchors the story’s message about legacy and responsibility.

The narrative closes on a mature reflection: the lessons of Class 3-E endure beyond a single classroom, shaping decisions in a dangerous world. The story acknowledges ongoing threats but emphasizes that the acts of restraint and defense are what give hope. It leaves audiences with a melancholy yet resolute sense of purpose.