In the mysterious future, crystalline organisms called Gems inhabit a world that has been destroyed by six meteors. Each Gem is assigned a role in order to fight against the Lunarians, a species who attacks them in order to shatter their bodies and use them as decorations. Phosphophyllite, also known as Phos, is a young and fragile Gem who dreams of helping their friends in the war effort. Instead, they are told to compile an encyclopedia because of their delicate condition. After begrudgingly embarking on this task, Phos meets Cinnabar, an intelligent gem who has been relegated to patrolling the isolated island at night because of the corrosive poison their body creates. After seeing how unhappy Cinnabar is, Phos decides to find a role that both of the rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems.

Genres

Cast

Phosphophyllite

Tomoyo Kurosawa

Shinsha

Mikako Komatsu

Diamond

Ai Kayano

Kongou

Jouji Nakata

Antarcticite

Mariya Ise

Bort

Ayane Sakura

Rutile

Yumi Uchiyama

Alexandrite

Rie Kugimiya

Amethyst 33

Kanae Itou

Amethyst 84

Kanae Itou

Yellow Diamond

Junko Minagawa

Euclase

Mamiko Noto