In order to save the life of his son, who has an intractable disease, Shinji's wife, Rei, signs a contract to become the meat urinal of a wealthy man named Gento for one year. Shinji laments his own powerlessness for selling his beloved wife, even for her son's sake. Gento sends videos every week that record the whole scene of Rei being trained. A year later, the surgery was a success, and Ainoya seemed to have returned to a peaceful life, but...
