Kyou, Furyou wo Hirou Today, I Took Care of a Bad Boy.

Synopsis

A handsome boy who had run away from his home appeared in front of college student Tsumugi's apartment. Tsumugi was intrigued by that boy who called himself Beni and who's a relative of the man who once killed his father. What will happen next...? "I regret it to death, I wish I'd never asked him to stay the night." (Source: Kadokawa, translated)