Mr. and Mrs. Yayoi live in the apartment next door... The beautiful wife shows a carefree smile when she greets him every morning, but the middle-aged man, who is single and works the night shift at a factory, is always casting lewd glances at her. Most of the man's gaze is fixed on the wife's defenselessly swaying, plump buttocks. The faint panty line is visible through the alluring peach buttocks of the wife... One day, the man sees the wife struggling to carry some luggage from her house by herself, so he helps her...