Shiori Yorimoto, a sincere and obedient new OL. Ordered to go on a business trip alone with her boss, whom she finds repulsive, she wakes up in a hotel room after being drunk. Despite her resistance, she's relentlessly pounded by his massive dick, drowning in pleasure unlike anything she's ever felt before. The timid new employee awakens to her masochistic side. Her repulsive old boss's seasoned techniques hit her so hard that her mind resists, but her pussy is thoroughly soaked and pounded for 72 hours straight!