Takahiro and Tsubaki have been married for two years. They began to see parts of each other that they hadn't seen before, and they started fighting more and more over trivial things. After hearing Tsubaki's complaints, Mitsuki, a colleague at work, invites Takahiro and his wife Tsubaki to his home and proposes that they swap couples for the weekend. ATID-556 ATID556 ATID