Something that I've learned after reading a bunch of manga and novels is that you shouldn't criticise a story that has yet to be completed since there are lots of stuff that can be explained in the next chapters and upcoming parts
and oh boy this is the first chapter and there is quite a handful of complaints already
eh I don't like the girl (who is apparently the actual protag) so I'm dropping. Would have been a lot better if they told us she was the protag from the start.
it seemed like it was going to be cool and then showed that he has a power. Bitch, WTF are saying he has no fucken power? This is a majutsu no index shit a-fucking again.