Succubus Slayer: All My Girlfriends are Demons

-Yandere Throughout his entire life, Adam struggled with an age old battle familiar to many healthy young men: being a hopeless virgin. No matter how much he worked out or improved himself, no woman was ever attracted to him. But one day, when Adam encounters a Succubus straight out of myth, he learns that his hopeless virginity turns out to be his greatest weapon: he possesses the Lust Gene which makes him repulsive to any ordinary woman but completely irresistible to any demon or monster girl. With the Lust Mark, Adam sets out on the greatest conquest of all: to collect a harem of demon girls and slay their hearts! Oh and along the way, maybe he might save the world once or twice.