The visiting caregiver 'Yuka' was struggling financially and would let elderly clients grope her breasts as a way to make extra money. Her son 'Kouzuke's classmate secretly filmed this, and it turned out that the grandson of the elderly person was Kouzuke himself! Shocked by the video, Kouzuke developed a strong interest in his mother, the woman closest to him. Believing incorrectly that giving money like the old man would result in sex, Yuka decided to educate him about proper sex using her own body.
