Mizuki, in her first year as a working adult, and Kenichi are planning to get married next year and currently living together. Tired from her working life, Mizuki accidentally hurts her waist and decides to call an outcall masseur. Her boyfriend is too busy with work to listen to Mizuki's complaints and weaknesses from her first year as a working adult, but she ends up venting to the outcall masseur Kawamura. Although Mizuki opens up to Kawamura, during the massage he touches sensitive areas, causing her to feel pleasure. Despite thinking it's wrong, she secretly gets excited from being touched and starts looking forward to the massages. After several sessions, just as Mizuki is about to reach climax, the timer goes off signaling the end of the session. "Would you like to extend the time?"
