"It's completely different from five years ago... I can already have an adult relationship ...? I want to lick each other violently until my tongue is stupid ... No?' Takeda, who is a teacher at a public school, was invited to an alumni reunion presided over by students who graduated five years ago. Mahiro Yuii, who has become unrecognizably beautiful, is fascinated by her. - The two suddenly approach from uncontrollable emotions and become a physical relationship.