A married couple celebrating their 20th anniversary. Although they have a good relationship, the wife always feels that having sex has become obligatory. Through her mom friends, she learns about 'paizuri', which involves a man receiving oral sex while standing. One day, the wife asks her husband if he would like her to perform paizuri on him. They hold hands, caress each other's arms, share pillow talk, take a shower together, kiss again, and engage in cunnilingus... As the wife experiences heightened sensitivity during these intimate moments, so does her husband, becoming aroused multiple times throughout their encounter. Their bond strengthens even further due to the paizuri sessions they share...