Leon inherits armor meant to protect people, but the world has already decided his mother's kind deserves to burn. The first half feels like it's wandering, then the show remembers what it's actually about: a man becoming something his bloodline should have made him, but his choices will decide. By the end you've watched someone change irreversibly, not through power scaling or plot convenience, but through the weight of watching everything he loved get systematically destroyed and deciding what he does with that devastation.

A corrupt adviser to the king of Valiante launches a witch hunt that kills many Makai Knights and their sorcerer allies, then takes control of the kingdom while the king is ill. Leon Lewis, born to a Makai Priest just before her execution, is rescued by his father, a Makai Knight, and raised to inherit the legendary Gold Armor. Now grown, Leon still carries hatred over his mother's death at the kingdom's hands while his father continues his training. Makai Knights secretly guard humanity from Horrors, demons that possess souls burdened by sorrow and pain. Meanwhile Prince Alfonso, driven out of the kingdom along with his mother, sets out to find the Gold Knight and win back his throne, and his search leads him to Leon.