Chapter 155

With the winter holiday behind them, Korosensei admits to a sneaky study tactic: throughout the break he whispered exam reminders into each pupil's ear, then vanished before anyone could react, a trick the students find more irritating than helpful. He distributes practice papers tailored to each of them and insists that clearing the entrance test will feel far gentler than any attempt on his life.

Talk soon drifts to which high schools the teens hope to attend. Karma surprises everyone by choosing to remain at Kunugigaoka, partly to spite the classmates who once dismissed him and partly to keep sparring with Gakushū Asano.

Elsewhere, Nagisa helps Sakura Kiyashiki study and confesses he has no clear plan for life beyond college. When she wonders aloud whether any path other than teaching appeals to him, he recognizes that he has come to look up to Korosensei the same way the God of Death once revered the killer who took his father. Before the exam hall, Korosensei and his duplicates send him off with encouragement, and Nagisa resolves to settle the question of his career once the tests are finished.

Korosensei reveals his covert holiday study method and issues individualized mock exams. Karma announces his intent to stay at Kunugigaoka to challenge Gakushū Asano. Nagisa admits his uncertainty to Sakura and realizes that his admiration for Korosensei mirrors the God of Death's respect for the man who killed his father.

Titled Super Teacher Time, this twenty-page installment appears as the one hundred fifty-fifth chapter within Volume 18. It sits between Winter Break Time and Seven-Three Time, and its flashbacks feature Nagisa's mother Hiromi alongside several classmates.