Reiko Makihara, the older sister who reveals her body to her beloved husband, JUX-478

Reiko, a woman married to her much younger husband Nobuo for many years, feels happy to be loved. Although they don't spend much time together, she sometimes feels lonely. One day, Reiko notices that Nobuo is acting differently than usual, and her growing distrust leads her to confront him... It turns out he was once scammed while drunk. Reiko is shocked, but as the older wife, she has to go and handle the situation on Nobuo's behalf. It seems men can't be appeased with just money and apologies...