18+ set in Japan

Isamu is a member of a powerful yakuza clan. Isamu joined the clan at a young age. He is handsome, strong & a playboy, bisexual. 

Isamu has been in love with his yakuza bosses youngest son (main character) for a long time, the main character has a pretty face, black hair & a beauty spot under his left eye, he recently graduated law school and has been working as a host to pay his student debts.

The bosses oldest son is Kanji, he & Isamu have been good friends for a long time.