Ishizuka (A Place Further Than the Universe, No Game, No Life Zero, The Pet Girl of Sakurasou) directed the anime and penned the script, and Takahiro Yoshimatsu (A Place Further Than the Universe, Hunter × Hunter, Trigun) designed the characters.
Ishizuka commented that the film is set in Iceland, saying that “after reaching Antarctica” in her previous anime A Place Further Than the Universe, she opened a map and looked for the opposite extreme from Antarctica.
Both Ishizuka and Yoshimatsu worked on A Place Further Than the Universe, a 2018 television anime about four girls who jump on an opportunity to join an Antarctic expedition for their own complicated reasons.
Yoshiaki Fujisawa (No Game, No Life Zero, A Place Further Than the Universe, Revue Starlight) composed the music.