Shunsuke Otosaka

Shunsuke is the older brother of protagonist Yu Otosaka, wielding a rare power known as 'Chronokinesis.' Driven by an unwavering resolve to liberate ability users who had been reduced to mere test subjects, he repeatedly leaped through time at an immense personal cost—ultimately losing his eyesight forever. Despite this sacrifice, he continued to operate in the shadows, establishing both Hoshinoumi Academy and a covert protective organization, serving as the unseen architect who quietly steered the story toward a hopeful future.