Youka Naze

Born as Kurokami Kujira, she is the elder sister of protagonist Medaka Kurokami. Driven by an obsessive pursuit of 'misfortune,' she severed ties with her family and used her unique 'Normalize' ability to erase all memories of her former self, reinventing her identity as a mysterious bioengineering expert wrapped head-to-toe in bandages. She first appears as the supreme coordinator of the Bottle Plan, demonstrating extraordinary skill in human body modification alongside razor-sharp analytical thinking. Despite her caustic tongue and brooding demeanor, she harbors profound affection for those she holds dear. In the story's later arcs, she sets aside her adversarial role and joins the Student Council to support the main cast.