Yakuza, Gangster, Assassin, Debts

This is Part 1. It is connected with 2. Don't Stay Gold + 3. Saezuru Tori wa Habatakanai. --> Yashiro is a masochist with sadistic tendencies who gets off more with guys (likes to be hurt etc). Otherwise he's an average high school student. One of his classmates, Kageyama, recognizes his burns and cuts and gives him always band aids. When Yashiro found out that Kageyama also helps him because he likes cuts he let Kageyama also touch his body. From than on every day. --> Sad end :

Part 2 --> Yakuza boss Yashiro really wants this "Mad Dog" fighter he found to work for him, but the "Mad Dog", Kuga, doesn't want, even he owes the yakuza boss a debt. After being injured and refusing to go with the boss, the "Mad Dog" winds up staying with the doctor, Kageyama, for a few days. Will the "Mad Dog" give in to the boss to pay off his debt? --> Love between Kageyama & Kuga

Part 3 --> The masochistic, lewd & beautiful yakuza boss Yashiro, who only ever loved Kageyama, meets a new bodyguard, Doumeki Chikara. Unfortunately, Doumeki is impotent (can't get it up). He is a silent and clumsy subordinate. This is the story of a man who has never known happiness (Yashiro) and of a man who is reborn by getting to know him (Doumeki).