Crimson Prince

Demon prince Sakura Koujirou comes to Earth, enrolling in high school, on a mission to find the human who will threaten the future of the demon realm...and steal their souls! But with no clue as to this human's identity, Koujirou is at a loss. To make matters worse, the boys' dorm at his new school is full, and he's forced to live off campus with a girl! Oh, the humanity...! (Source: Yen Press) Included one-shot: Volume 1: Smile Game