I married a man with a child from a previous relationship, and raised his daughter, Miwa, as my own. I was truly relieved that she grew up to be such an honest, diligent, and well-behaved girl. One day, however, I accidentally broke a cherished keepsake from Miwa's late mother. Though she appeared calm at the time, a few days later she began inviting her male classmates over and instructing them to assault me. When I begged for mercy, she simply stood by and watched in silence. From that moment on, my life became an endless cycle of gangbangs at the hands of my stepdaughter's friends...