MDTM-269 The reason why my shut-in sister became my sex slave Elena Shimoshima

Younger sister Elena of school girls. I don't know her reason, but she doesn't go to school and she stays in her house for about half a year. When she finds out about her sister's masturbation habits, she gives her a new toy and sees her sister using it, and her brother's desire explodes! Get into the room and force SEX! She was a puzzled sister, but she gradually became obedient to her brother's play. And her brother's slave training began...