The parents, troubled by their son's poor academic ability and tendency to withdraw into society, decide to hire a female tutor who is well-known on the streets. However, the son, who is already full of worldly desires and lacks motivation, is so distracted by the tutor's mature body that he can't concentrate on his studies. Reiko decides to use reverse therapy to relieve her virgin son's frustration and arousal, but... Will her son's academic ability actually improve?