The two are an employee and a part-timer with an age difference as large as parent and child, and that was all they were supposed to be. On the way home from an event after-party where they had so much fun that they lost track of time, Chisato and the part-timer missed the last train and had to find a nearby hotel to make do until the first train in the morning. Unfortunately, it was the weekend and all the hotels were booked, so they had no choice but to share a room. Feeling a little awkward and tense, Chisato starts complaining about her husband. However, she gradually lets her guard down as the part-timer listens to her with kindness... The moment their interests coincide, their lips naturally meet, as does the charm of an adult and a young body.