SNIS-323 I'm going to get raped. ~A beautiful older sister who cares for her younger brother~ Aya Sakurai

Aya lost her parents and lived happily with her younger brother even though she was poor. One day, he suddenly receives someone from his younger brother's workplace and learns that his younger brother has embezzled company money. Bondage rape where you can't move. Sex training using aphrodisiacs. In order to repay him with his body, he becomes a female dog himself...without knowing that he is his younger brother...