Ichika Hoshimiya is an incredibly beautiful and serious female teacher. Because a student from her class was absent, Ichika Hoshimiya was asked by the head of the class to talk with the family. She had been here once before, but due to the foul smell coming from the trash that filled the house, she decided to leave. However, this time the student's father opened the door, so Ichika Hoshimiya couldn't leave anymore. Once inside the house, the smell was even stronger, making Ichika Hoshimiya have to go to the bathroom to vomit. Taking this opportunity, he secretly put an aphrodisiac in her water bottle. Ichika Hoshimiya, without suspicion, drank the tainted water. Her mind gradually became empty, and her body became very sensitive, allowing him to easily seize control of her body.From then on, Ichika Hoshimiya stayed here living with him, and he continuously made her drink various aphrodisiac drugs to keep her from being alert. And when his son finds out, Ichika Hoshimiya officially becomes a sex toy for both father and son...