In a world of extraordinary superpowers, humans are at risk of becoming manifested, becoming senseless monsters whose only goal is destruction. High schooler yoru takes a lonely path to protect the people he cares about. However, this all changes when he encounters a manifest on his first day back in school. When a student who secretly works for The Agency, a private monster-hunting organization, sees him defeat the monster, she questions his strengths and wonders if he should be recruited to work with them.