When my daughter Ichika got married, being a doting father, I renovated our house into a duplex. Living together was harmonious, and I had built a good relationship with my son-in-law, Shinji-kun. However, everything changed after that day. My wife, Fuyuka, started visiting the daughter's couple's home more and more for any reason. When I thought she had made an unbelievable promise with our daughter, my daughter started telling unnatural lies, saying she hadn't made any such promise...
