A delinquent kid who talks to animals gets fused with a cat and suddenly understands he's been drafted into a war nobody told him about. The show knows the real power isn't the transformation or the mononoke fights, it's that Jiro actually cares what happens to the creatures caught in the middle. Every supernatural battle becomes personal because he refuses to treat anything as just another monster to kill.
Jiro Azuma has always been different. While he projects a tough exterior, he harbors a secret gift: the ability to talk to animals. This talent becomes a liability when he rescues a stray cat that turns out to be far more than it seems. The creature fuses with him, unlocking dormant supernatural abilities and binding him to a war he never asked to join. Humanity exists in an uneasy truce with mononoke, ancient Japanese spirits whose true nature remains hidden from the general population. Jiro finds himself conscripted into this invisible conflict, forced to harness his newfound powers while grappling with the reality of a shadow world lurking beneath everyday society. His compassion for creatures, both ordinary and supernatural, becomes his greatest asset and his most dangerous weakness. As Jiro navigates battles against entities far older and more powerful than himself, he must decide what side he truly stands on. The line between human and spirit grows increasingly blurred, and his choices will determine whether peace can hold or whether the hidden war consumes everything.