This was one of my first anime and man was it fucking awesome. The 2nd half of Assassination Classroom really ramps up, as class E has to take on the rest of the classes, and prove that they aren't the worst. On top of that this last season is EXTREMELY emotional as the students have to deal with the fact that after spending all this time with their teacher, they will have to kill him, which obviously was a goal since the start of the anime, but was put off as the students started to enjoy his company. I cried. A lot.