Been looking for this manhwa, it's fantasy and magic type manhwa. he became a professor and it has 999 number I think in the title.
https://www.mangago.me/read-manga/magic_level_99990000_all_attribute_great_sage/ this maybe?
Been looking for this manhwa, it's fantasy and magic type manhwa. he became a professor and it has 999 number I think in the title.