"I'm living, I'll revenge instead!" -When I was in the third grade of elementary school, my brother committed suicide. The cause is bullying. His brother's diary had a remains saying, "I want to die and revenge, I want to scare if I die," but the school did not acknowledge the fact of bullying, and as a result, it protected the perpetrators. The bullying group who knew it laughed at the dyspepsies and the death of his brother was never rewarded -- I pledge revenge instead and decide to enter the high school where his brother committed suicide. There is no point unless it is there: There is no time to enjoy life as a teacher. Then, the entrance ceremony that was met, and the role of my class was announced. The teacher's name was "Sasao Yuichi", who was person, who killed his brother
source : handycomic