The daughter, who came to the health spa with her father, is still a child at Kokoro, and without caring about her surroundings, she takes off her clothes and enters the men's bath. When the father leaves, he approaches his daughter. He shows her his erect penis and makes her touch it, and she observes it with interest. When the father returns and they separate, he follows his daughter, and they are reunited in the nap room. The daughter, who doesn't even understand the meaning of sex yet, begins asking to play with his penis again...