Iso remarked that, “I’d been seeing less anime set in space, so I thought I’d make one myself.
I wanted to portray a story of a group of children thrown into that environment as if it had actually happened.”
The studio Production +h was established specifically to make this anime, and full-fledged production has begun with funding by Avex Pictures and ASMIK Ace.
Iso had announced the anime at the Anime Central convention in 2018.