I really liked the first chapter; the art was great, the fan service was almost subtle and the main/first female he meets is very likable from the get-go.

But I'm worried that it will degenerate into an annoying cliche. To clarify I'll paraphrase a post from another site: I'm really tired of the one normal guy being surrounded by a horde of monstrously strong girls who are all contemptuous of him because 1) he wasn't trained from birth to be a supernatural badass and 2) because he's male. It's infuriating seeing an MC who, no matter how nice he is (and this MC seems like a genuinely good person, not a perverted molester that is labelled "good" because he's the protagonist) or how much he perseveres, is treated like crap by a bunch of insufferable twats for no good reason - and he can never do anything about it because he has only recently graduated from being a muggle but has been placed in the midst of dangerous magical psychopaths.

Two more details that I don't understand: why is it an all-girls school and why are they wearing sailor fuku in during battle training? I think it'd be better if some of the girls mentioned that they only wore it when they wanted to look cute for themselves of their friends (or their love interests).