レッドアイ
from Assassination Classroom
Origin
Japan
Red Eye, is a professional assassin who specializes in sniping. With a record of thirty five kills, Red Eye is quite confident with his skills as a sniper. Perhaps because of this confidence, he welcomes a challenge as seen when his first attempt at assassinating Korosensei failed. However, he knows his limitations and is willing to give up on a job that he thinks would be impossible for him to complete. As a renowned assassin specializing in long distance killing, he has over eight years of experience and a record of thirty-five kills. His nickname Red Eye is stemmed from his way to find beauty in the splash of blood when a bullet hits.

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.