Koki Horikoshi

Seiji Hasumi is a popular English teacher in a private high school. He is also a violent and sociopathic killer, who slowly takes control of the students and faculty through murder and manipulation. When he is caught in the act during preparations for the school cultural festival, he sees staging a massacre as the only way out.

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.