The incantation pulls you into a world where kids are casually given the power to command demons, and the show never questions whether that's a good idea. Jin and Akira don't save the world because they're chosen, they save it because they accidentally opened the door and now they're the only ones who can close it. That gap between "we found a magic book" and "we're responsible for everything" is where this show lives, and it never lets either character forget the weight of their own carelessness.
Four childhood friends stumble upon an ancient grimoire in their school library and make a discovery that changes everything: they can summon demons. A mysterious girl named Ami reveals the shocking truth: Jin, Akira, and Lena are Devil Children, chosen warriors destined to save the world from destruction. Armed with powerful devices called Devil Risers, the trio is thrust into Valhalla, a parallel realm teeming with supernatural creatures and dark magic. There, an tyrannical ruler named Imperius plots to breach the barrier between worlds and conquer humanity. Standing against him seems impossible, yet Jin and Akira bond with their own demons, creatures willing to fight alongside them. What begins as a thrilling adventure becomes a desperate race to stop an invasion before it's too late. The show balances genuine stakes with the wonder of discovery: every new demon encountered feels significant, every battle teaches something about courage and friendship. This is action-adventure that understands what hooks younger viewers: the fantasy of commanding allies in battle, the camaraderie of a team facing overwhelming odds together, and a world that feels genuinely dangerous.