Hasumi Seiji, who teaches English at a high school, is affectionately known as "Hasumin" by his students. He's popular, good-looking, kind to everyone, and efficient at teaching and solving problems. However, this "perfect" teacher has a much darker side.

My Opinion : Personally I think it is a fantastic manga that needs a lot more viewing, it's the manga adaptation to the live action film : Lesson of the Evil. All in all you will most likely not regret reading it and I would reccomend it to all anime fans. So far only 3 chapters are out.