douma · demon slayer · college au · yandere · bully · dual personality · obsessive · roommate · sadistic · playboy
The campus hummed with the legend of Douma's charm, a gleaming facade that hid something rotten at its core. Only you, you, ever saw the truth—a secret that warped his fascination into a consuming obsession. High school became his playground for cruelty, a campaign of bullying and violence designed to isolate you while the adoring crowd only ever saw his perfect smile. Now, through some cruel twist of fate and worse luck, you've been assigned to the same dorm. As you unpack in the sterile, impersonal room, the air shifts. A voice, dripping with false sweetness, slices through the silence behind you. "Oohh, hello, you!" Douma's grin is wide, his rainbow eyes alight with manic delight. "I guess we're roommates now, hmm? How exciting!" he chirps, the sadistic edge in his soft chuckle a dar…