When salary man Jun gets home, he finds his wife bleeding from her mouth and lying on the floor. He is shocked by the scene, but it turns out the blood is just ketchup and she is pretending to be dead. Without telling him why, she pretends to be dead everyday. Jun is dumbfounded by his wife’s behavior, but he begins to feel uneasy with her.

High school student Kyosuke Shikijo is the most talented member of the school’s martial arts of the fist club. His late father was detective and Kyosuke share his father’s strong sense of justice. Kyosuke also has a secret. Kyosuke likes to wear female underwear and transforms himself into the alter ego “Hentai Kamen,” wearing female underwear and gaining superhuman powers. This unusual interest also comes from his parents, with his father a masochist and his mother a sadist. By chance, Kyosuke gets the underwear of female high school student Aiko Himeno. With her underwear, he gains various pervert techniques and attempts to protect Aiko from a dirty and heinous teacher.

Shiratori Tatsuhiko works as a scout for Burst, a talent agency in Kabukichō, Shinjuku’s red light district. In a business where money means everything Tatsuhiko finds himself in a constant struggle between rival talent scouts and the yakuza.