JUL-876 While my wife was on a business trip, I was seduced by my sister-in-law, Sumire, and we had intense creampie sex until the sperm I had stored for 30 days was emptied... - Mizukawa Violet

I work at an IT-related company and live apart from my wife. - Due to my wife's work, she often travels for long periods of time, and when she occasionally returns home, she asks me to vent my frustrations, and my stress and sexual desire are increasing day by day. - I have a close sister-in-law, Sumire, who often comes to my house when my wife is not home. - One day, as we were having drinks and small talk as usual, Sumire kissed me. - Then, with a mischievous look on her face, she whispered to me, ``If you can continue abstinence for a month...''...