Kinda looked through all my lists, several online readers and the advanced search function of this manga. Starts off with a demon prince or heir of a prominent demon family, top of demon class and whatnot, and he gets assigned to go to a human school to stir up trouble and/or look for a person who has the power to be dangerous to demons. Ends up meeting this absurdly kind girl, and then finds out that his boarding house has been double booked and he has no place to stay, and ends up living in the same house as said girl. Soon meets taller, were-wolfy demon his own age and then a megane angel cop.

Kurenai Ouji?

Nggggh! Spot on! Thanks a bunch!