>>929077Houseki no kuni, it’s a seinen and covers up until book 5 of the manga.
It’s probably the best rendition of a Cg anime out there and has one of the most fitting and enjoyable ost that I ever heard.
The story is very good as well as character development and world building.
I would advise you to watch it and then read the manga from the start if you like where the story goes.