The peaceful city of Ayase is suddenly attacked by a monster, Grigio Bone.

While younger brother Isami is ecstatic about his new powers, elder brother Katsumi on the other hand is in fear of this great power.

When two brothers with clashing personalities obtain incredible powers, they focus on overcoming their differences to defend Earth as a superhero team.

When two brothers with clashing personalities obtain incredible powers, they focus on overcoming their differences to defend Earth as a superhero team.

When two brothers with clashing personalities obtain incredible powers, they focus on overcoming their differences to defend Earth as a superhero team.

When two brothers with clashing personalities obtain incredible powers, they focus on overcoming their differences to defend Earth as a superhero team.