Nao and I are not actually father and son. Nao was a child from my second marriage. A few years after my second marriage, my wife passed away and I raised Nao on my own. A few years later, after entering the workforce, Nao said she had someone she wanted to introduce to us, and brought her fiancee along. It was then that I Kokoro I was in love with Nao and was jealous of the couple. Then, one night after we were living together as a married couple, I witnessed the couple having sex. I was filled with anger and sexual desire as my husband treated Nao roughly, not even performing cunnilingus on her...