Nor your stupid brain. Just too many "mc does everything side characters are there to be saved" stories. Hell even when the MC does train them they still end up being weak.
Presumably this is because they are written as self insert characters and the authors assume the reader has no real friends and so no one to trust or rely on.
My guess is that since he doesn't use AI magic and is the disciple of the "origin of magic" aka Vaitaner, he can "easily" reach 10th circle without the stone. Similar to how the "dark magic king" presumably reached 10th circle since he also doesn't use AI magic. Im guessing original magic like that of vaitaners and black magic doesn't have that restriction of being capped at the 9th circle

Why couldn’t Ha-yul take the elixir himself??