Hidetada is troubled by his wife Arisa's overly kind and gullible nature, frustrated by how easily she falls for scams or agrees to things like newspaper subscriptions. One day, Hidetada consults his father, Taduo, and decides to have him fundamentally change Arisa's personality. Taduo, who once worked in personnel training new employees, begins strictly disciplining Arisa in private. Under the pretext of correcting her posture, he touches her meticulously during his instruction. Though Arisa resists at first, she gradually begins to change. A new shift emerges in their marital relationship.