![](https://cdn.animecharacters.io/images/anime/large/23372-780c32a4.jpg)
Format
TV
Episodes
13
Episode Duration
23 min per ep
Status
Finished Airing
Premiered
Spring 2023
Aired
2023-04-01 to 2023-06-24
Source
Manga
Rating
R - 17+ (violence & profanity)
Genres
Adventure
Mystery
Sci-Fi
Seinen
Survival
Studios
Production I.G
Producers
Mainichi Broadcasting System
Kodansha
NBCUniversal Entertainment Japan
Avex Pictures
NetEase
Licensors
Tengoku Daimakyou (天国大魔境)
Fifteen years ago, disaster struck human civilization, and now dangerous man-eating monsters roam the ravaged lands, posing an existential threat to the remaining survivors. Amid this turmoil, an isolated facility shelters children and nurtures them in peace. However, as a few among them find out about the world beyond the narrow periphery of their nursery's walls, their curiosity about it slowly grows. Meanwhile, in the outside world, young survivors Maru and Kiruko band together to search for a special place called Heaven, each for their own reasons. Carrying past burdens and tragic secrets, the two hope to find answers to the cruelty they have experienced in their lives and in the world, which still remains in tatters. [Written by MAL Rewrite]