Aoi is a true "mama's boy". He always listens to his mother, believes that his mother's words are always right, and is always honest with her... Recently, his grades have not been good, and the homeroom teacher suggested that Aoi's mother hire a tutor to help him. The teacher also has a new friend from America, a doctor from a university there, who is currently available while waiting for an appointment. A talented person like this, so Aoi's mother immediately asked the teacher to contact the doctor. However, when meeting this doctor, Aoi's mother immediately felt a dislike. This tutor, Ito, was wearing shorts that were so short they revealed her buttocks, and a revealing top that showed part of her chest, seemingly tempting men's desires. Ito also felt that Aoi's mother was very intimidating and guessed that she would not last long here. When she met Aoi, she found this young man to be quite interesting. Clearly curious about her body but pretending to be uninterested because he was listening to his mother. So Ito decided to give him a course in "special education". She will help Aoi discover sexual pleasure, to 'broaden his knowledge', and help him relax his mind. And indeed, Ito's method is very effective. After a while, Aoi has been accepted into the school he desired, and Aoi's mother is also very grateful to Ito. But this also means that the two must part ways here, today will be the last 'lesson'...