Three years ago, my older brother got married and his wife, Ruu, moved into our family home. She was kind to everyone, beautiful and elegant, and highly regarded by the neighbors. I gradually began to develop feelings for her, wishing I could marry someone just like her. Initially, the couple got along well and lived harmoniously, but after three years, their relationship started to drift apart, entering a phase of stagnation. With my parents eagerly expecting grandchildren and my brother increasingly absent due to work, Ruu found herself spending more and more time alone. Unable to cheer her up, I could only watch from afar. Then one day, everything changed...