Leo awakens the Atavistic Fiend System. He defies everyone's doubts and forms a contract with a low-loyalty Spirit Beast. Relying on the system and his training, he triggers its Atavism, turning it into a formidable Archaic Fiend. He makes a comeback in the Academy Placement Exam. When Riverton faces a crisis, he steps up to protect his family and the people, showing a young man's responsibility and commitment.
