Five years had passed since our marriage, and my wife became pregnant. She said she would give birth at her parents' home. I thought that maybe a single life again wouldn't be bad, but my sister-in-law came to help with the housework. My sister-in-law, whom I hadn't seen in a while, was beautiful and exuded mature charm, making me look at her as a woman despite knowing it was wrong. The thought of being alone with her in the same house made me uneasy. One time, when I was peeping at my sister-in-law masturbating, our eyes met, and since then, we have been involved in forbidden…
