Tengoku Daimakyo - Season 1 - Eps 1: Heaven and Hell
Japan has collapsed after the Great Disaster. Kiruko accepts a request to take a boy named Maru to a place called Heaven. Meanwhile, children live behind the walls of a nursery in luscious green surroundings. After receiving a mysterious message, Tokio begins to doubt the world around him.
About Tengoku Daimakyo

Title: Tengoku Daimakyo
First Air Date: 2023-04-01
Last Air Date: 2023-06-24
Status: Ended
Rating: 8/10 (from 199 votes)
Language: JA
Seasons: 1
Total Episodes: 13
Network: Tokyo MX BS11
Genres: Animation, Mystery, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Production I.G, avex pictures, NetEase Games, NBCUniversal Entertainment Japan, Kodansha, MBS
Synopsis
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. Kiruko, an odd-job girl in Nakano, accepts a mysterious woman's dying wish to take a boy named Maru to a place called Heaven. Maru is convinced that there will be a boy there who looks exactly like him.
Cast

Gen Sato
Maru (voice)

Sayaka Senbongi
Kiruko (voice)

Hibiku Yamamura
Tokio (voice)

Toshiyuki Toyonaga
Kona (voice)

Misato Fukuen
Mimihime (voice)

Shunsuke Takeuchi
Shiro (voice)

Tomoyo Kurosawa
Kuku (voice)

Misato Matsuoka
Anzu (voice)

Yuuki Shin
Taka (voice)

Kazuya Nakai
Robin Inazaki (voice)