Kazuya, who moved to Tokyo to study at a university, is in the midst of puberty and masturbates every day. He is currently in his third year of retaking the exam. He has fired his predecessors one after another, saying that his failure in the exams is due to poor teaching methods. Then, in front of this hopeless boy, a legendary beautiful private tutor, Ms. Niimura, appears, who is said to always improve his grades. Her teaching method is a surprising dirty talk method that alternates between gentle and comforting "carrots" and harsh and abusive "sticks" to bug and activate his brain...!