Land of the Lustrous - S01

In a mysterious future, crystalline organisms called Gems live in a world destroyed by six meteors. Each Gem is given a role to fight the Lunarians, a species that attacks them 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. Instead, they are told to compile an encyclopedia because of their delicate condition. After reluctantly starting this task, Phos meets Cinnabar, an intelligent Gem who has been assigned to patrol the isolated island at night because of the corrosive poison their body produces. After seeing how unhappy Cinnabar is, Phos decides to find a role that both rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems.