My only daughter, Ichika, whom I raised with great care, finally got married. As a doting parent, I couldn't bear the pain of my daughter leaving, so I decided to renovate our house into a two-family dwelling. My daughter and her husband seemed happy about it, so I was optimistic about our future life... But not long after the two-family arrangement began, my wife, Maki, started acting strangely. She goes to my daughter's house for every occasion, leaves the house for unnatural reasons, and is clearly meeting Shinji, my son-in-law, with obvious lies...
