Dark hair, dark skirts - Yami Shoujo!
Do you know about "Yami Shoujo"? She's an original character created by a pixiv user named Morina (森名). She's often with a small black living thing witih yellow eyes that collect a bunch of blank little living things together. Her dark motif is adorable, so check out these illustrations of Yami Shoujo!
Check out more work we didn't show here at pixiv! ・闇少女