In the 4th twisted couple series, a big butt wife, Luna Tsukino, appears! The wife is absolutely having an affair. What such a wife hates the most is SEX with her husband. Pretending that you don't know anything or are not aware of it, you dare to seek the activities of the couple. My wife, Luna, has a reluctant attitude, but ... Because they are a couple, they cannot refuse strongly. I'm very excited about SEX while being complained about and glared at ... - And she silently made a vaginal shot. "Because we're a couple."