her mother, hatori sumika.

His mother and children, Sumika and Yuka, who are as close as their sisters. He had a family relationship with Yuka's boyfriend, Koretada, including Sumika. Meanwhile, Yuka planned to stay with her husband on a business trip and Sumika agreed. On the day, Sumika calms down her body with masturbation because she was worried about Yuka's room condition. At that time, he was alone in the kitchen when he could not sleep next to Yuka due to tension. Sumika came to such a coffin while scattering pheromones.