The Beast Who Refused to Let Me Go

A straight human guy, just trying to win a scholarship, accidentally enrolls in an orc noble academy, only to be simultaneously marked as fated mates by three top Alpha bullies. From then on, he fights to survive the ruthless heat-season love triangle and the desperate struggle to keep his "straight guy" mask intact, ultimately turning the tables, taming all three beasts, and becoming king of the orc realm.