One night, Kaito Hazama, the leader of the Yashiro Group, encounters a mysterious young man at a familiar bar. The young man, who immediately heads to the restroom without taking even a sip of bourbon, exhibits suspicious behavior and holds a small knife in his hand, its blade pointed at Kaito. He is a hitman sent by a rival gang to eliminate him. After leading him outside as if to care for him, Kaito starts questioning him in the neon-lit alley. "I like that you won't betray your boss," says Kaito. Kaito then confines the young man and subjects him to sweet yet cruel acts of pleasure...

A passionate and intense love story intertwines with the world of yakuza, where lives are at stake.