Kazumi married Yuichi, a divorced man several years her senior, a few years ago and lives with him and his son Kouta. While Kazumi feels happiness in her daily life, Kouta finds it unpleasant to have Kazumi acting like his mother. Kota tried to humiliate Kaori by secretly giving her a diuretic and faking an accident to lock himself in the room with her. Unaware of anything, Kaori would wiggle her hips or cross her legs desperately trying to hold it in as her urge to urinate grew, but she couldn't hold it anymore and ended up wetting herself in front of Kota. Kanta, excited by Kaori's urine-soaked appearance, lunged at her and frantically licked her filthy crotch!
