Mizuki, a first-year working professional, and Kenichi are living together and planning to get married next year. Tired of working life, Mizuki suddenly hurts her back and decides to call a dispatched masseuse. Her boyfriend is busy with work and doesn't listen to Mizuki's complaints about her first year as a working professional, but he ends up complaining about the kindness of the dispatched masseuse, Kawamura. Mizuki opens Kokoro to Kawamura, but when he massages a sensitive spot during the treatment, she can't help but feel something. Even though she knows she shouldn't, she secretly gets excited by being touched, and starts looking forward to the treatment. After several massages, Mizuki is teased to the point of climax, and the timer rings, signaling the end of the time. "Do you want to extend?" he asks...