RBD-769 — The Day My Sister Became Mine Alone, Yu Konishi

Yuu's marriage was already decided and her job as an office lady was going well, but the only thing that worried her was that her younger brother Kazu had suddenly stopped going to school and shut himself in his room. When Kazu found out that his older sister had gotten married, he went berserk... he became violent towards his mother and committed the forbidden act against his older sister...