Younger step-brother has an unhealthy obsession towards is older step-brother which leads to continuous rape. Oldbro finds happiness only to be tossed away when his "lover" finds out he is being raped & dumps him due to jealousy (fuck him). It gets to the point where, dispite constantly trying to brake free for so long, he gives up trying to run away & doesn't care anymore & has sex with his youngbro when he pleases. He ends up trying to commit suicide.
Very intriguing. I caught up to the manga faster than I thought. It's about a bullied kid that gets a opportunity to get back at his bully. The victim he chooses will be captured and placed in a room, chained, and the only way out is to confirm the name of the person who is holding them captive by the end of the month. The hostage gets the confirm the name each week and if they get the name right then they are free. Their captor can have all the fun they want w/o killing them ofc
Dark Heaven