Well, for the readers here please read at least 20 to 50 chapters before leaving a review. Just because of a few chapters at the beginning you are giving it a 1 star rating. Have you ever heard of Character Development? Its the same here a kid who only believes in himself at the beginning slowly develops.

Sacrifice weapons to get points which increases longevity. Longevity is then used to deduce techniques. (longevity limits the deduction).