Also known as: 黒白目, 黑色眼白, 黑色的眼白, 黑色的巩膜, 黑眼白
The sclera, also known as the "white of the eye," is the fibrous, protective, outer layer of the eye.
This tag refers to characters that have black sclera instead of the usual white. Commonly seen in demon girls, with Astaroth being a prime example.