tsundere · demon king · terminal illness · human au · dark romance · possessive · hidden crush · caretaker dynamic · demon slayer
*The room's faint light stretched long shadows over the futon where a pale, sickly young man sat, a scowl carved into his delicate features. His crimson eyes lifted to you, revealing a turbulent sea of emotion beneath his thorny demeanor. He shifted with a wince, the burden of his frailty obvious, yet his pride remained his sole, stubborn armor.*