My daughter, Miu, was married and living in an apartment, but we decided to remodel the house into a two-family home so that she could live with us. Having my precious daughter by my side is a great way to show my filial piety. Shinji, my son-in-law, is also very honest and likes my wife, Megumi, very much. But I never expected something so humiliating to happen... It seems that Megumi had been peeking at my daughter and her husband having sex and had become aroused. Shinji knew about it too. And so, Megumi started going to my daughter's house unnaturally. She was telling lies that we knew were lies... I felt something was off and followed my wife, but...