死神
from Assassination Classroom
The Reaper is the final antagonist of the series. He is known for targeting several other assassins, including Lovro Brovski and Red Eye. As one of the world's best assassins, the Reaper is ruthless and cunning, and is willing to use any means, no matter how amoral, in order to attain his goals. The Reaper acts with a complete lack of morality and concern for others. He views the children of Class 3-E as nothing more than obstacles, and was willing to drown them as part of his assassination attempt on Korosensei. His ruthless demeanor remained intact when he augmented himself with tentacles as shown when he impaled Kaede Kayano without a second thought. Like his former master, he sports a very amicable smile and is easily perceived to be a kind, harmless person. During the time when the Reaper threatened to cut up Irina in front of the class, his passive demeanor made the class unable to feel any sense of fear (something Karma actually dreaded).
Assassination Classroom
When a mysterious creature chops the moon down to a permanent crescent, the students of class 3-E of Kunugigaoka Middle School find themselves confronted with an enormous task: assassinate the creature responsible for the disaster before Earth suffers a similar fate. However, the monster, dubbed Koro-sensei (the indestructible teacher), is able to fly at speeds of up to Mach 20, which he demonstrates freely, leaving any attempt to subdue him in his extraterrestrial dust. Furthermore, the misfits of 3-E soon find that the strange, tentacled beast is more than just indomitable—he is the best teacher they have ever had! Adapted from the humorous hit manga by Yuusei Matsui, Ansatsu Kyoushitsu tells the story of these junior high pupils as they polish their assassination skills and grow in order to stand strong against the oppressive school system, their own life problems, and one day, Koro-sensei.
