Houseki no Kuni PV

宝石の国PV

The Gems fight against the Lunarians, beings who attack them and use their shattered bodies as decorations. Each Gem is assigned a role, and Phos, the youngest, is assigned to create an encyclopedia of natural history.

(Source: HIDIVE)

Note: A promotional video that was released through YouTube in commemoration of the publication of the manga's first volume.