Busty OL Aoi becomes a victim of groping on the train she uses every day... Moreover, she is boldly tortured with toys inside the carriage. Just when she thought it was a one-time thing, the next day she is tortured with lotion, and the day after that, she ends up having a rough cock inserted into her. As the groping techniques gradually escalate, Aoi, who initially resisted, begins to feel pleasure...