We're about to do something even naughtier," Kazane, an office worker who has returned to her hometown, reunites with her childhood friend Haru at an izakaya for the first time in seven years. They were always together in high school, but seeing him again after so long, he seems to have grown a little stronger. They decide to have another drink together, and in her drunken state, she confesses that she "still can't lose her virginity," to which he suggests, "Then how about doing it with me?" Haru, who used to be a mischievous kid, has thick, manly fingers, and when he touches her gently, she can't stop shivering. She's always liked him, so it's okay to do it just once, right...?