Companion to the anime, a short retelling of the first episode from Geordo's perspective.
Companion to the anime, a short retelling of the first episode from Keith's perspective.
Companion to the anime, a short retelling of the second episode from Mary's perspective.
Companion to the anime, a short retelling of the second episode from Alan's perspective.
Companion to the anime, a short retelling of the third episode from Sophia's perspective.
Companion to the anime, a short retelling of the third episode from Nicol's perspective.
Toy Snake quickly recaps the first 3 episodes.
The myths behind some of history's most defining moments and revealing facts behind America's space explorations.
The OVA will tell the childhood stories of the main characters, adapting from the first volume of Satoru Yamaguchi's original light novel.
Bundled with the seventh limited edition volume of the manga.