My only daughter, Ichika, whom I had raised with great care and care, has finally gotten married.As a foolish parent, I couldn't bear the pain of my daughter leaving, so I took the plunge and renovated our house into a two-family home.My daughter and her husband were happy, so I'm optimistic about my future. However, some time after they started living together, my wife, Maki, has been acting strangely.She has been going to her daughter's house every now and then, leaving the house for unnatural reasons, and clearly lying about meeting her son-in-law, Shinji....