Houseki No Kuni

Houseki No Kuni or Land of the Lustrous (Japanese: 宝石の国, Hepburn: Hōseki no Kuni, lit. “Country of Jewels”) is a Japanese manga series written and illustrated by Haruko Ichikawa. It is published by Kodansha in Monthly Afternoon magazine since October 2012, with its chapters collected in eleven tankōbon volumes as of July 2020. Set in a world inhabited by “jewel people”, it chronicles their efforts to find the place where they belong and defend their way of life. A 3D anime television series adaptation by Orange aired between October and December 2017.
In a mysterious future, a new life form called Gems inhabit a world destroyed by six meteors, leaving only a beach surrounded by ocean. The 28 active Gems must fight back against the deadly Lunarians who seek to turn the Gems into decorations. All Gems are assigned a specific role to play in their community, such as fighter, medic, weapon-smith, etc.