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I particularly like Super Mechanic. I don't know if it suits my taste. I hope you won't be too harsh. Although the protagonists are salty, they never want to become mediocre even though they are in a mediocre situation. Ahem. Generally speaking, this article is not a pure science fiction novel. Some scientific logic may not be consistent with the facts, but in general, this novel still avoids the uncomfortable feeling of fantasy. As for martial arts, let others do it.