VENU-600 Suddenly, my wife's sister barged in and kept me hard for a whole day and night. Shinzan Sayumi.

One day, while my wife was preparing for childbirth and had gone back to her parents' place, my sister-in-law Sari came over, saying she thought I might be having a hard time. She helped with cooking, laundry, and taking care of me. As I was casually soaking in the bath, Sari suddenly barged in naked. She said she would even take care of my lower half. Apparently, things weren't going well with her husband, and she had come to relieve some tension. My sister-in-law's real target was my…