Yotsuha is a new female employee who has just graduated from university. Excited to go on her first business trip with her boss, whom she has always secretly loved, Yotsuha feels thrilled. After finishing work, when they both returned to their dorm, they discovered there was only one room. It turns out, Yotsuha intentionally booked only one room to be able to stay with her boss. While her boss was soaking in a hot bath, Yotsuha entered completely naked, leaving him very flustered. Under Yotsuha's seduction, her boss ultimately could not resist and they enjoyed sexual pleasure together...