The first person Sakurai saw when she opened the door was her younger brother Riho Fujimori. He probably thought she was grown up, so when his sister patted Riho Fujimori's head, he pulled her hand away and looked annoyed.
Sakurai was quite horny abroad, so she got to know a lot of Western guys. When she returned home, no one fucked her anymore, so she often felt itchy "down there", and her sister was sure that Riho Fujimori was the only man in the house who could satisfy her.
Sakurai saw her younger brother as a sexual tool, and she constantly tried to make Riho Fujimori want to fuck her. Although she knew that as biological sisters, it was against morality, Riho Fujimori really couldn't resist the attraction of her beautiful older sister's body...
