Hulu’s Best-Kept Sci-Fi Secret: Heavenly Delusion Is a 10/10 Cyberpunk Masterpiece
Cancel your plans—Hulu now lets subscribers devour Heavenly Delusion, the standout modern sci-fi post-apocalyptic series, in a single day.
We all rally around the usual sci-fi heavyweights: The X-Files, The Twilight Zone, Firefly, Doctor Who, Star Trek. Lately, The Expanse, Andor, For All Mankind, Severance, and Fallout carry the torch. Meanwhile, a knockout hard sci-fi series has been sitting quietly on Hulu, waiting for you to notice it: Heavenly Delusion (Tengoku Daimakyou). It is a single-season binge with real ideas, a wicked sense of momentum, and worldbuilding that sticks.
The setup
Decades after a near-total collapse of humanity, survivors scrape by on the ruined surface. The story tracks two parallel threads:
Inside a sealed, high-tech research facility with straight-up cyberpunk vibes, a group of precocious kids grows up under watchful adults who enforce odd rules. The children show unsettling abilities that hint at something bigger lurking under the routine.
Out on the road, two travelers roam a blasted landscape searching for a place everyone calls 'heaven.' Their path runs through human factions with crooked moral codes and the kind of grotesque, flesh-eating creatures you hope only exist in fiction. The catch: they have no map, no proof this 'heaven' exists, and danger at every turn.
An opener that grips and does not let go
The first episode snaps between the facility and the wasteland without wasting a breath. The surface storyline throws our duo into a showdown with bandits that doubles as a flex for Production I.G., the studio behind FLCL. The animation goes hard, and the standout prop is a battery-powered laser weapon called the A-mk3, better known as the 'Kiru Beam.' It cuts through basically anything, and it is the only reason these two have made it this far. Yes, even after the world ends, someone engineered a rechargeable death ray.
Big ideas, bigger execution
Plenty of shows slap on lasers and call it sci-fi. Heavenly Delusion actually uses its tech and setting to say something. The mystery around 'heaven' threads the facility kids and the surface travelers together in ways that get stranger and more compelling with each episode. Above ground and below, the world feels intricate, plausible, and worth exploring. Even if animation is not usually your first stop, this one rewards any sci-fi fan who shows up.
- Where to watch: Hulu
- Length: One season, weekend-friendly binge (a day if you want bragging rights)
- Source material: Manga by Masakazu Ishiguro
- Animation studio: Production I.G. (the crew behind FLCL)
- Vibe: Hard sci-fi mystery; post-apocalyptic road story meets sealed-campus thriller
- Signature toy: The A-mk3 'Kiru Beam' battery laser
Heavenly Delusion is the best sci-fi series you have probably skipped. Queue it up tonight and catch the first episode’s hook do its thing. If you end up watching the whole run in one go, I will not blame you.