A few days have passed since Akane Misaki and Ken Hazama began living together for a week—an arrangement triggered by a contract error made by the landlord. One day, Hazama grows worried when Akane is late coming home. Unable to reach her by phone, he decides to go pick her up at her part-time job. Akane is happy he came for her, yet she harbors mixed feelings knowing their time living together is coming to an end in just a few days. Perhaps due to the alcohol he drank while waiting, Hazama collapses onto the table and falls asleep the moment they return to the apartment. Concerned, Akane tries to wake him up. Feeling the softness of Akane's breasts against his back, Hazama becomes aroused and pins her down. He snaps back to reality when Akane pleads to take a bath since she has just returned home, but they end up taking a bath together. Not wanting Hazama to initiate sexual acts at his own pace as usual, Akane decides to take a different approach. Includes "Chapter 3" from the original work, "1LDK + JK: Sudden Cohabitation? Close Encounters!? First Time Having Sex!!?"