There was a monster in Greek Mythology that was covered in eyes. Was Hera's servant, guarded Io, killed by Hermes, and that's where the Peacock gained it's feathers.
I remember the story of the Argus. Everytime I imagined it in mind though it never came out even remotely close to being as hot as what I looking at... wow did I reall just admit this is hot?
According to Pixiv commentary, this is lesskiss' moe-personification of Hyakume.
"百目(Hyakume, 100 eyes)" is a Japanese youkai that has one handread eyes all over the body. It is said that Hyakume is probably a creation of Mangaka Mizuki Shigeru.
In the Japanese folktale, there was Todomeki (百々目鬼), a female oni that was covered in eyes.