Kurenai Ouji

Kurenai Ouji (紅心王子) is a manga series by Souta Kuwahara. It is serialized in Shounen Gangan.

Plot
Is their meeting a coincidence? Is their love inevitable?

Sakura Koujirou is a demon prince who descends to the human world in order to take human souls. But after a strange turn of events, he somehow ends up living with a human girl, Hana... This is a story of young love, sweet and touching.