What kind of man can Ogura Nanami turn into in a month... breaking the virginity record. Sex NG the moment they meet... "You've been holding back for a week. So... shall we have sex?" With a kind and attentive personality, she beautifully graduates him from virginity. Although guiding him isn't easy, her gentle maternal instincts transform him into a captive, changing his initial "want to have sex" to "want to have sex with Hanasaki"... Because he truly falls in love, he cries and suffers during sex... It's truly bittersweet.