In the year 2024, the world has collapsed. Grotesque monsters lurk amongst the ruins of Japan, while remaining people scrape together what they can to survive.


✦Production I.G contrasts a guarded school full of unanswered questions with a dangerous trek through ruined Japan, giving its mystery two distinct textures from the opening episode.
Synopsis
Maru and Kiruko cross a wrecked Japan in search of a place called Heaven. Elsewhere, children study inside a sealed facility that seems almost comfortable. Production I.G makes both settings look inviting enough to cause concern. It is a travel story where food and shelter matter, while every quiet room appears to be withholding paperwork.
Follow Maru and Kiruko through abandoned towns where supplies are scarce and strange creatures roam. Cut to children living under careful supervision inside an isolated school. The series builds tension by placing practical survival beside controlled comfort, then letting the visual parallels accumulate. Clean character animation and patient questions make the ruined landscapes feel deliberately double-sided.
You get a beautifully animated post-collapse road adventure, then the show cuts to this pristine school where every normal activity feels suspicious! Maru and Kiruko have such immediate chemistry that even scavenging carries a spark. Meanwhile, the facility scenes turn tiny details into giant question marks. Doors and awkward pauses become unreasonable homework before the first episode is over.
It throws a lot of unexplained imagery at you early, and some viewers will resent being asked to file every clue for later. Still, the structure earns patience. Maru and Kiruko face tangible problems on the road, while the enclosed school supplies a colder kind of unease. Production I.G keeps the environments specific enough that the mystery never floats free of daily life.