Story continues with the students' own conflicts, Koro Sensei’s identity and the fate of the world. The time limit for assassination is approaching.

Assassination Classroom: Graduation

In June 1945 Yamauchi Fusako goes alone to Manchuria where her husband, Setsuo, a second lieutenant of the Kwantung Army, is based. At that time, 200,000 Japanese had settled in Manchuria, a Japanese occupied territory, as settler communities. Fujita Hideo’s family worked hard to clear the wilderness, but the Soviets are lying in wait for an invasion of Manchuria from the North. Fusako is safely reunited with her husband at the headquarters of the Kwantung Army’s Fifth Training Squadron in Manchuria’s Dahushan. Setsuo also takes good care of his beloved wife, but his position is an instructor to the young soldiers who will eventually carry out suicide attacks. He wonders if he should have summoned her and speaks of these mixed feelings to his commanding officer, Michiba Kazuo, a first lieutenant. Michiba is concerned about Setsuo’s attempts to cherish his wife before the coming showdown on homeland. Fusako learns about life in Manchuria from Michiba’s wife, Etsu.