Adam, an orphan boy who now lives with a foster family is traumatized for years after managing to get out of the orphanage from the demon attack. That was 7 years ago. Even seven years passed, he wasn't able to forget it. No matter how hard he tried, it still haunts him. Because he made it out alive, he fears they would be coming for him. Things was settled down, but when he hears about demons on TV, and on the internet. He wants to brush it off, but adam will one day know that none of that is gonna be working, not at all.
A human child gets adopted by a demon and later dies, come experience the rollercoaster of a life in hell.
Disclaimer: I don't own Helluva boss or cover art