An 18-year-old poor college student tried to apply for a job as a tutor but his life almost ended as demons' meal. In his last breath, a mysterious woman gave him a strange power. When he opened his eyes he had turned into a demon with a system that will turn him into... A pervert. Now he must live with his dual identity as a model student named Ethan and an incubus named Damian, while conquering MILF, monster girl, beautiful elf, demon loli which sometimes leads him to complicated relationships. Other tags : Hiding Identity, Monster Girls, Tentacles, Character Development, Weak to Strong. *Most of my story has a big harem, I'm not interested in writing a small harem with only two or three girls.