Tyrant Boyfriend~6 UNDER GROUND~

In the busy streets of Shinjuku, Keigo lives a careless life as a gangster. Before meeting Haiji and his gang, he was alone and unwanted. Now, Keigo is Haiji's most treasured pet, and Haiji will end anyone who gets to lay a finger on him. In a world of violence, will these two be able to last?

(Source: Futekiya)