Episode 46

Graduation Time is the twenty-fourth episode of Season 2 and the forty-sixth episode of the Assassination Classroom anime. It premiered in Japan on June 23, 2016.

Plot summary
After Kayano is revived, Korosensei falls on his back exhausted. At his urging, and despite their reluctance, the class pin Korosensei's tentacles and render him unable to move. Nagisa volunteers to perform the actual killing. After saying his final goodbyes to Irina and Karasuma, Korosensei calls attendance one last time. At the same time he privately thinks to himself how grateful he is to nurture the students and in turn nurtured by them throughout the year.

Nagisa begins to shake uncontrollably just as he is about to plunge his knife down on his teacher's heart, but Korosensei calms him down, telling him to smile. After some effort, Nagisa does so. Saying his final goodbyes he kills Korosensei with all the emotions he has felt. Korosensei begins to fade in a bright light, until all that remains of their teacher is his clothes. The class begin to cry uncontrollably as they finally graduate from their assassination classroom. On the morning of their junior high school graduation, the students wake up in their classroom, having slept while reading through the enormous books of advice given to each of them by their late teacher.

Anime and Manga differences

 * On some memories revealed before the final answer from class comes, there are several differences like the picture made by Sugaya was more ecchi on anime compared to his abstract on manga and Mimura using G36 on anime while on manga he was using dual handgun, Chiba was behind Korosensei when he make look like Chiba while on manga he was in front of Korosensei having look like Chiba and during making curry Hinata appears in anime, catching curry dish while on manga she did not appear.
 * On anime he was noted he will be immobilzed as Weaknesses #33 while on manga it was on #37
 * When Korosensei bid farewell to Karasuma and Irina, they both are still standing while on manga they are sitting down.
 * During the picture when Korosensei takes picture with the class, everyone include Karasuma and Irina are present on photo while on manga only Karasuma and Irina did not appear moments before execution.
 * During memories revelation moments before execution on anime, it appears every moment the class spend with Korosensei while on manga it only revealed Nagisa's memories to Korosensei.
 * When the inspection troops come, Irina did not present on anime while on manga she was present along with Karasuma that halt the troops advance to the classroom.

Trivia

 * This episodes does not feature Bye Bye YESTERDAY as an opening.
 * This episode is noted to be the most touching by many of the Assassination Classroom fans.