Kiro Akiyama

At a prestigious high school in Tokyo, the third grade D class consists of high scoring students. Their previous homeroom teacher went crazy in a short period of time and quit their job. The students in third grade D class pushes their homeroom teachers to the edge and watches their teachers collapse mentally. The students view it as a game they enjoy playing. Tsuneo Yoshizawa appears in third grade D class as their new homeroom teacher. Tsuneo Yoshizawa keeps a smile on his face, even though he is attacked verbally and physically by the students. He never loses his smile. The students' behavior gets worse towards Tsuneo Yoshizawa and they concoct a plan to kill their teacher.

Emma, Norman and Ray are the brightest kids at the Grace Field House orphanage. And under the care of the woman they refer to as “Mom,” all the kids have enjoyed a comfortable life. Good food, clean clothes and the perfect environment to learn—what more could an orphan ask for? One day, though, Emma and Norman uncover the dark truth of the outside world they are forbidden from seeing.