Synopsis
In "Zero Sum Game," Yuuka, Yazaki's girlfriend or wife, learns that his brother is the lead singer of the popular band Zero Sum. After getting backstage passes to a concert, Yuuka and Yazaki are plunged into a nightmarish scenario when every band member except their leader, Keith, kidnaps Yuuka and assaults her on the rooftop. Keith orchestrates this attack, driven by his obsessive love for his brother. As a result, Yuuka is left traumatized, unable to shake the memories of what happened.
