Ansatsu Kyoushitsu 2nd Season

Class 3-E returns for its second semester with the same impossible assignment: assassinate Koro-sensei before the school year ends and save Earth from destruction. Their teacher has become both harder to kill and far more important to them, with every new attempt revealing how much they have learned under him. Outside the classroom, the bounty keeps rising, deadlier assassins appear, and the school's ruthless principal continues trying to crush the class academically through his favored Class A. As the deadline approaches, the problem is no longer simply finding a way to kill an untouchable creature. The students must uncover Koro-sensei's past and decide for themselves what kind of ending they truly want.