I really like Koro-sensei's design from Assassination Classroom. His tentacly body implies that he is slick; his face is always a smile everywhere giving a dangerous vibe at the beginning which, as the show progresses and we get to know him better, altered into a soft and gentle joy of a face;
the moon on his tie shows his heart and how it is white on a black background just makes it stick out more;
his uniform is that of someone whom you would imagine as "a good teacher"; and most of all, I love his personality: how he has a personal connection to all his students, how he cares about them so much that he would make personal tests for each of them during their exam, how he
puts his students' lives before his own,
and also how he knows when to put the foot down. He not only scan the weaknesses of his students to fix them and his enemies to exploit it, he also find weaknesses within himself and constantly works to improve himself alongside his students. And that ending, oh boy. The moment that
Koro-sensei begin calling out each and every one of his students, how all the characters and the viewers know that this is his final time to check the absent list
... That scene was heartbreaking. And after that,
the scene where the students wake up at their respective desks, after a night of crying, to find the incredibly thick guidebook that Koro-sensei wrote personally for each of them which still help them in their adulthood
really touched my heart. How he is interested in
helping his students even beyond his inevitable demise
left me speechless. He is simply a teacher that is too good to be true. And I kinda hate reality because of that.
The premise of the show was about a group of classmates who are not only underdogs, but also tasked with destroying a planet-destroying monster before a labeled doomsday. But in the end, I loved Assassination Classroom for the characters more than the plot. I don't have a lot of shows which I can say the same to but when I get this special feeling again, I know that I will crave for more of it. I find this same feeling while watching Pet Girl of Sakura-sou, A Sister's All You Need, Charlotte, Angel Beats, Re: Creators, A Silent Voice, and Your Name. Still hunting for more.