Mystari's manga / #Cousins(3)

Miya, who has been sick since he was a child, studies hard to become a detective like his father. One day in the library, Miya meets a flashy man named Kanou Rei, who is surrounded by strange rumours about an underground tunnel beneath the university. However, Kanou seems to know Miya for some reason. Strangely intrigued, Miya learns from his father that the two boys are actually cousins.

A story about cousins, unhealthy relationships, and denial of one’s sexuality. And of course rough sex.