Onesan No Midarana Goshin Jutsu (Futami Bunko)

[Machine Translation] A senior in college decides to start a self-defense class for women, and Yuji moves in as a caretaker on the second floor of the dojo. He is told that he may help out by playing the role of a pervert, but he soon loses his virginity when he is approached by the female instructor. After that, he pretends to be a "virgin" and has relations with a beautiful university lecturer and the wives of the landlords who rent the dojo. A new sensual novel by the most successful author in this field!

大学の先輩が女性向けの護身術の教室を始めることになり、道場の二階に管理人として住むことになった雄司。痴漢役で手伝うこともある、という話だったが、早速その女性師範から迫られ、童貞を失う。それを境に、「童貞」のふりをしつつ、美人大学講師、道場を貸している大家の妻たちと関係を持ってしまうが―。斯界一の売れっ子作家による書下し官能!