Yamada is assigned to Nurse Kiritani, who initially appears sweet and caring during his treatments. However, Kurokawa warns him that Kiritani is actually a cruel bully. The truth is soon revealed when Kiritani drops her facade, using her authority to humiliate Kurokawa and force her into a sexual encounter with Yamada using a potent aphrodisiac. Now trapped under her sadistic control, Yamada realizes the danger he is in as Kiritani begins to treat him as her personal toy.