In Front Of My Stepbrother... - Aida Usagi

The Usaki siblings lost their parents when they were young. The older sister Aika worked hard, graduated from junior college, and became an office lady. In contrast, her younger brother Masakazu had a tendency to play around and didn't study properly, but Aika doted on him as her only family. Then one day, a man named Kudō contacts Aika on her cell phone, saying, "Your younger brother has defiled the female boss of our group." To settle the matter, Aika is kidnapped by Kudō and his men and subjected to extreme humiliation...