On the occasion of the summer vacation, the international student Sakurai decided to book a plane ticket to visit her hometown to visit her family. The first person Sakurai saw when he opened the door was his younger brother Taka, who probably thought he had grown up, so when the older sister rubbed his head, Taka pulled out his hand and looked annoyed. Abroad, Sakurai is quite horny, so she knows a lot of western boys, and when she comes home from being fucked by no one anymore, she often gets itchy "there", and her sister is sure that Taka is the only man in the house who can satisfy her.
Sakurai sees her brother as a sex tool, and the girl constantly tries to get Taka to want to fuck her. Although he knew that he was a biological sister, it was against morality, but in fact, Taka couldn't resist the attraction of his beautiful sister's body...