Ichika is asked to try on underwear at an underwear store run by the wife of her husband's boss, Tabuchi. Tabuchi comes to her husband's absence and asks for her impression of the fitting and forcibly commits Ichika. After that, Tabuchi, who frequently visited her husband and passed out, would let her husband go on a business trip and abuse Ichika as much as she wanted. Ichika drowns in the numbing pleasure of his relentless caresses.