Official English on Renta

As the worst delinquent of his grade, Kikuma Teranishi is forced to change dorm rooms after breaking the school rules one too many times. Reluctantly entering his new room, he comes face to face with the dorm superintendent, Takasumi Uryuu, who stirs in him hitherto unknown feelings... Kikuma's body tingles, and he wants to take out his urges on Takasumi... What is going on? The next time Kikuma breaks the school rules, Takasumi lays down a ground rule that sparks their relationship: "If you obey, I'll reward you. If you don't, you get punished."

Official English on Futekiya

In a world where humans have a "second sex" determining whether they're a dominant or a submissive, you'd be forgiven for thinking rowdy delinquent Kikuma is a dom, through and through. After sending three students to the hospital, the school nurse tells him the truth he hadn't been expecting - Kikuma was a sub all along! Surely this isn't something his new roommate would figure out...?

From Exiled Rebels Scans:
“Kikuma, kneel.”
I don’t want to obey his orders, but somehow my body moved on its own. He fingered me, put a cock ring on me…I want to come, but I can’t!
After violating school regulations, the number one delinquent in his year – Teranishi Kikuma – is forced to change dorm rooms. Reluctantly accepting his fate, he heads for his new room, where he meets Uryuu Takasumi, the dorm leader. A strange feeling he has never experienced before overtakes him. His body tingles and he feels an urge to fight Takasumi…what the hell is this?
When he breaks the rules again, Takasumi sets up a few conditions, and their master-slave relationship begins. “If you follow the rules, you’ll get a reward. If you break them, you’ll be punished.”