Yuko is married to Taro, the second-generation president of Shiraki Shoji. They have no hardships in life, and their father-in-law, the previous owner, has bought them a house, so she is Kokoro about the new life she is starting with her beloved husband. However, Yuko has a secret that only her husband can tell. She has an extreme tendency to squirt. Taro kindly tells her, "There's no need to worry," and Yuko exerts herself to squirt, something she wasn't able to do when they were renting. However, her tendency later leads to a serious incident...