It wrecks the kid's life in the first five minutes and never apologizes for it. Setsuna Kai shows up in a new city to live alone in an apartment, and the sky starts dropping rocks. He dodges one boulder, and the next one flattens the home he hasn't even unpacked in. That's the tone: a Shin Megami Tensei spinoff wearing a Saturday-morning monster-partner costume, where the friendly scientist Dr. Kaname points a machine at a stranded teenager and tells him he's a Devil Child, and that's supposed to be good news. Fifty episodes is a long time to live with a franchise that treats demons as coworkers instead of pets, and this one commits, aimed squarely at kids in 2000 while carrying SMT's bloodline underneath. Watch it for the boy standing in the rubble of an apartment he never got to sleep in.
Setsuna Kai arrives in a new city to start fresh, only to have his first day derailed by a catastrophic meteor shower that obliterates his apartment. Before he can process the disaster, a mysterious scientist named Dr. Kaname appears with an extraordinary claim: Setsuna isn't just lucky to survive, he's a "Devil Child," someone capable of communicating with demons and wielding their power. Whisked away to a hidden laboratory, Setsuna discovers he's one of a select few chosen to protect humanity from the supernatural threats bleeding into the real world. With demons emerging from the shadows and stranger anomalies unfolding around him, Setsuna must learn to command his newfound abilities while uncovering why he was born with this rare gift. The story balances action-packed demon battles against moments of genuine discovery as Setsuna adjusts to his unexpected role. Part adventure, part supernatural mystery, this series appeals to viewers who enjoy strategic creature-collecting gameplay translated into narrative form, combined with stakes that grow steadily higher as each revelation deepens the lore.