The story follows the daily life of Kotetsu-kun, who aspires to be an astronaut, and friends at the Animal Space Academy as they all pursue their dreams.

Natsumi Fujiwaraas Kotetsu (voice)
Tsuyoshi Muroas DAXA-kun (voice) / Narrator (voice)
Ayana Taketatsuas Hikaru (voice)
Kappei Yamaguchias Jii-chan (voice)
Masashi Tamakias Lou (voice)
Junya Enokias Niko (voice)
Akane Yamaguchias Otama (voice)
Ayasa Itoas Michiko (voice)
Yutaka Aoyamaas Principal (voice)
Tsuyoshi Koyamaas Tobio (voice)