Aggressive courtship. Erina, a female student, has a crush on her homeroom teacher, Mr. Umeeda. She realized she had fallen for the kind and student-oriented teacher without even noticing. Erina has one烦恼. She wants to "devour" the person she likes so much that she ends up covering their entire lips and drenching them with saliva in a so-called "coitus-like" kiss. Erina confesses to the teacher and, unable to hold back, gives him a "coitus-like" kiss. From that day on, she can't control her feelings and causes the teacher trouble. She doesn't want to cause him trouble, but she can't help it... she likes him that much. One day, when Erina learns that her relationship with the teacher has become the subject of gossip, she decides to give him up for his sake... Forbidden love, uncontrollable feelings... A coming-of-age story told through the girl's peculiar and erotic kisses, as she grapples with her unique sexual preferences while honestly confronting her feelings of love.
