Seiji Kagami

A rich boy that was bored of his uneventful life. One day, while strolling around the city, he finds Mizuhara Takumi raping [Haruse Ayaka](https://anilist.co/character/40494/Ayaka). The girl screams and her pained face awakens Seiji's darker desires. He befriends Takumi, who teaches Seiji, gives him a list of targets and sometimes helps him.