Got it! Here’s the updated and expanded summary with Spike, Missy, Master Jiro, Liora, and Atsui’s Inferno Fist:

Blaze X tells the story of Atsui, a brave and determined warrior navigating a world fueled by spiritual energy. Known for his kind heart and unrelenting willpower, Atsui wields his signature move, Inferno Fist—a devastating punch infused with fiery spiritual flames that embodies his strength and resolve. Despite battling inner darkness, he remains steadfast in his mission to protect his friends and grow stronger.