A newly hired employee with G-cup breasts and a youthful face, Adachi Yuri, is tricked into sharing a room with her annoying boss while on a business trip... She experiences continuous, intense sexual intercourse until she reaches multiple orgasms by morning. (SSIS-728)

New employee Adachi is assigned to a business trip with his boss, Saeyama, whom he has always disliked. Adachi has an affair with his senior colleague, Yoshida, and he confides in Saeyama about it, but only receives a comforting response, so he reluctantly goes on the trip. At the business trip location, Adachi is forced to attend Saeyama's dinner party, where he is drugged with sleeping pills. When he wakes up, Saeyama is greedily taking advantage of him. Adachi initially resists, but when his penis is inserted, he is overwhelmed by a wave of pleasure. Their bodies are incredibly intimate, and they scream continuously throughout the night.