Es la historia de una estudiante de preparatoria y una maestra de preparatoria que se conocen mediante una app similar a Tinder. El nombre de la estudiante es Kaburagi Aya, una chica introvertida de 16 años que se registra en la ya mencionada app pretendiendo ser una estudiante universitaria, y de esa manera conoce a una mujer un poco mayor que ella llamada Kurosaki. Kaburagi Aya, a highschool student who doesnt feel fit in with her highschool life, and Kurosaki Sei, a teacher who was oppressed by the trauma from the past, knowing each other by matching App. With ulterior motives from both side, the relationship between them has been distorted gradually...