Mitamura Mako

After 5 years of being a hikikomori, 30 year old Toshio makes a decision. That being, to graduate from his virginity. But interacting with people after all this time is scary... So let's just summon a demon! A big titty succubus, at that!! But what he summoned was actually a virgin mesugaki demon?! The cohabitation of the demon Ester who doesn't want to do it with a virgin who has no technique, and the virgin being taught technique by a demon who wants the ultimate graduation from his virginity now begins!!