it's decent because the tropes are ones I like but author has a tendency to write annoying side characters. this is fine because they're mostly teenagers or children and both of those groups have a tendancy to be annoying.
MC is an mc who wants to have the freedom to make his own choices. despite this being pretty important to him he inevitably tries to be a hero and involves himself in other people's shit for no reason. it doesn't help that the side characters he's doing shit for are irritating or annoying .
also important to him is learning about the magic system which exists outside of just being a numerical system (yay). more time should be spent doing this because it's the best part of the novel.