After three years of marriage, my wife became pregnant and decided to go back home to give birth. As she left, I thought about finally enjoying some time alone again. However, her younger sister came to help out with household chores while my wife was away. It had been a long time since we last saw each other, but now that we met again, she seemed even cuter and more attractive than before. Her figure was great, and I couldn't help but find myself drawn to her despite knowing better. Being stuck at home together made things difficult to handle; every time I caught a glimpse of her or imagined being intimate with her, my heart raced uncontrollably. One day, when I accidentally walked in on her masturbating, all self-control flew out the window. From there on...
