『Fanza Jav Dmm R18 shkd245』 Mayu was raised in a rich family, and had always loved and respected her older brother. One day, while her parents were out, a serial rapist broke in, and raped her before her brother's eyes. Watching it, her brother began to feel a strange, unusual feeling.... The Reason Why I Violated My Sister Mayuka Kotono. 妹を犯した理由… 琴野まゆか 裕福な家庭に育ったまゆは、兄を尊敬し慕っていた。ある日、両親が不在の時に、レイプ常習犯が自宅に潜入し、兄の目の前で犯されてしまう。兄はまゆがレイプされているのを見て、異常な興奮を覚えたのだった…。!