"If only I hadn't been late that day..." Yuki had always been someone special since childhood. The days we spent together felt like a bond unlike any other. As we grew, romantic feelings blossomed, and we built a sweet, ordinary life together. But everything changed when I was late for a date. Her life took a sudden turn, contact between us was lost, and she vanished completely. One day, a video arrived on my phone. It showed not the Yuki I once knew, but a tattooed girl, moaning wildly in an obscene state of ecstasy... This shocking scene shattered my heart.