GAL-style "Miina" and the quiet, beautiful "Kotone" become sexual guinea pigs for the intelligent female doctor "Rinka," who works at a counseling facility, and her kind, well-endowed assistant "Harumi." Inside the facility, "Harumi" secretly takes advantage of "Kotone" while "Rinka" is away, washing her body in the bath and repeatedly engaging in bold acts like sucking her nipples and French kissing her. Meanwhile, "Rinka" hides deep sexual desires beneath her calm demeanor, satisfying her lust by simultaneously fingering both "Miina" and "Kotone" from behind, bringing them both to climax. This work stands out for its intricate character dynamics and relationships, weaving together intense sexual tension and erotic scenes.