SDMU-765 The college girl that his little brother loves most pretends to miss the last train, and on their first stay at a love hotel, she seduces her virgin brother. The brother, having touched his mature sister's naked body, gets aroused in the unprotec

A beautiful sister who harbors special feelings for her real younger brother requests cooperation from SOD! Under the pretext of a hotel stay monitoring experience, she lures three pairs of sisters and brothers to a love hotel alone and monitors them. Using a survey that can earn up to 100,000 yen as an excuse, this perverted sister shortens the distance with her virgin brother while playing lewd pranks. The brothers accidentally get erections when they touch their mature sister's naked body...