Reuben Lack — a senior manager of English dubbing at Disney — announced on his Twitter page that the upcoming Heavenly Delusion anime adaptation will be simulcasted in the United States and other worldwide territories when it premieres in Japan on April 1, 2023.
Disney+ will stream the anime worldwide, Hulu will stream the series in the U.S., and Star+ will stream it in Latin America. The news of the simulcast was also confirmed on the Disney+ Singapore and Denpa Twitter accounts.
Lack also added that the anime will receive an English dub at a later date.
Just… look at the art style, folks. Beyond stunning, cinematic. And, the sub will simulcast **globally** (including the US) in 5 days!! Dub to follow later. Get excited!!!
— Reuben Lack (@thereubeh) March 28, 2023
(Sorry, this is gonna become a D+ anime marketing Twitter account over the next few weeks 😅😆) https://t.co/2WI7sEENIX
Hirotaka Mori (Sword Art Online: Ordinal Scale assistant director) is directing the anime with Makoto Fukami (Blade of the Immortal) as series screenwriter, Minakata Laboratory’s Utsushita (“Adventuring Party ~Heroes of Forest~” music video) as character designer, Ryouta Furukawa (Psycho Pass 3 co-main animator) as Hiruko designer, Shinobu Tsuneki (Fena: Pirate Princess) as mechanical designer, and Akira Takata (Moriarty the Patriot) as gun designer. Production I.G is in charge of the animation production for the series.
Other staff members include Yuuji Kaneko (Ranking of Kings) as art director, Izumi Hirose (Drifting Home) as color designer, Kentarou Waki (Sword Art Online -Alicization– War of Underworld) as photography director, and Kensuke Ushio (Chainsaw Man) as music composer.
Meanwhile, the main voice cast includes Gen Satou as Maru, Sayaka Senbongi as Kiruko, Hibiku Yamamura as Tokio, Toshiyuki Toyonaga as Kona, Misato Fukuen as Mimihime, Shunsuke Takeuchi as Shiro, Tomoyo Kurosawa as Kuku, Misato Matsuoka as Anzu, and Yuuki Shin as Taka.
Other voice cast members consist of Kazuya Nakai as Robin Inazaki, Masako Isobe as the nursery director, Tadashi Mutou as Sawatari, and Atsumi Tanezaki as Aoshima.
Heavenly Delusion is based on the manga by Masakazu Ishiguro, which began in Kodansha’s Monthly Afternoon magazine on January 25, 2018. The series is published under the Afternoon KC imprint and has released eight tankoubon volumes as of November 2022. The manga also placed first on the Kono Manga ga Sugoi! 2019 ranking (male category).

Denpa releases the manga series in English and describes the story as:
Within the safety of the walls, youths are raised in a nursery-style setting by robots. While life there may appear stale on the surface, the children are full of potential and curiosity. In many ways it is like a slice of heaven.
The outside world is a hell-scape. It is almost entirely void of anything mechanical and is now inhabited by bizarre, yet powerful supernatural beings.
Maru, with the aid of Kiruko, is out there crisscrossing what was once Tokyo for heaven. But after searching for so long, maybe heaven is more of an untenable dream than a potential reality.