Tengoku Daimakyo (Season 1)

Tengoku Daimakyo (2023) is a dark post-apocalyptic anime series from Production I.G. that you can watch online on iFILM. Two storylines run in parallel: one follows a boy named Maru and his guardian Kiruko as they travel through the ruins of Japan overrun by grotesque creatures, searching for a place called Heaven. The other unfolds inside a walled sanctuary where children grow up sheltered and cared for — but slowly begin to sense that something about their perfect home doesn't add up.

Maru believes there's a boy inside Heaven who looks exactly like him. That riddle drives the road-trip half of the series forward, while the sanctuary episodes build dread through small, unsettling details rather than action. The two threads feel disconnected at first and then, episode by episode, start pulling toward each other in ways the show earns rather than explains away.

It's the kind of anime that trusts its audience to sit with open questions — patient, visually precise, and stranger than its premise suggests. Stream Tengoku Daimakyo (2023) online on iFILM.