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Main question is: since when does vitality equals defense? Less important, but still important: why would she be slower than everyone else by default? Even less important, but still important: why would she be acquiring levels and skills that fast?
It's just that from perspective of someone who played a few (MMO)RPGs some of the concepts do not make much sense, because they would make the game unbalanced, at least. If you do not pay those questions any mind, then... It may be good as something "lighter" to watch. Will give it a shot and see how it goes.