When my daughter Ichika got married, I, an idiot parent, renovated the house into a two-family house. We lived together happily and had a good relationship with my son-in-law, Shinji, but everything changed after that day. For some reason, my wife, Fuyuka, started going to my daughter's couple's house more and more, and just when I thought she had made an impossible promise to her daughter, her daughter started telling unnatural lies that she had never made such a promise...
