beta
Did you guys really think he is weak?
For me, he isn't. And I don’t think the other characters believing he’s a strong hunter is really a "misunderstanding."
He already showed his strength. It took him a while to reconstruct a spell from his previous world, but he managed it. He couldn't do much else because he has very little mana—almost none, really. But his true power lies in his efficiency and deep understanding of magic. He’s practically a sage, since he already knows almost all the magic that exists on Earth—because it already existed on his planet.
Basically, he can do anything related to magic. On Earth, hunters’ skills are limited by their magical affinity—some people can only use one type, like fire, water, or invisibility, and not everyone even has that. But he can use them all, as long as he understands the magical principles behind them. And even with very little mana, he can modify spells to make them 10 times—or more—stronger.
In my opinion, he's already strong. He just relies too much on the excuse that he has low mana (which is understandable), and that makes him seem weak from the reader’s point of view. Honestly, I don’t care much about the misunderstanding the other characters have—how they think he’s an S-rank hunter pretending to be F-rank—because I already see him as strong. Maybe not quite S-rank, but at least B-rank.