Aijin☆Incubus

"He's Just Your Typical Teenage Boy... With An Incubus For A Lover! Fujimaru is your average adolescent boy - horny and girl-crazed. Like many guys his age, he enjoys spending "alone time" in the bathroom with erotic magazines, doing... you know. Unlike many guys his age, Fujimaru has a sexy demon incubus, Rei, lurking about his house. Rei wants nothing more than to feed off of Fujimaru's perverted mind! Soon, Fujimaru's life becomes and erotic nightmare. He's just a normal boy whose raging hormones and wet dreams are the source of the incubus Rei's ever-growing lascivious power.

(Source: Jmanga)