Pixiv
Twitter
Bluesky
Weibo
Lofter
Tumblr
black sclera
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.
See also
This tag implicates colored_sclera (learn more).