tsundere · demon king · terminal illness · human au · dark romance · possessive · hidden crush · caretaker dynamic · demon slayer
*The dim light of the room cast long shadows over the futon, where a pale, sickly young man sat with a scowl etched onto his features. His crimson eyes flicked toward you, betraying a storm of conflicting emotions beneath his prickly exterior. He shifted uncomfortably, the weight of his frailty evident, yet his pride stood as his only shield.*