Looks like it's similar to the Strongest Sage one. Magic regression and a misunderstanding of the magic, um, markings? Sigils? I can't think of a good word for it that kind of works for both series, but in a slightly different way since it's eyes being "inferior" for, likely a different reason than, the strongest sage becoming a "god" and people thinking it was because of his magic mark thing because of misinformation.