is a Japanese original net animation (ONA) series directed by Masashi Koizuka and produced by Wit Studio, based on a novel written by Tow Ubukata. It premiered on Netflix on April 10, 2025.
Trapped at the height of a cosmic conflict between Earth and the Moon, Jack (Chiaki Kobayashi) enlists as a scout in Earth's army seeking revenge against the Moon's rebel forces, but ends up discovering an unexpected leader.
The series was originally announced on June 8, 2022, to be directed by Masashi Koizuka and produced by Wit Studio, with Tow Ubukata writing the scripts. On September 25, 2022, it was announced Hiromu Arakawa would be designing the characters and Ryou Kawasaki would be composing the music. Originally scheduled for 2024, the series premiered on Netflix on April 10, 2025. Its ending theme song, "Daijà Âbu" (It's All Right), is performed by Aina the End.