From Storm in Heaven

Fujimaru is a typical teenage boy: girl-obsessed. And like boys that age do, he enjoys spending alone-time in the bathroom with sexy magazines doing, well, you know what. Except the problem is that there's an incubus lurking around his new house, one that'd be more than glad to feed off of his wet dreams. How exactly is Fujimaru going to cope when he becomes Rei's meal-ticket?