yeah, it's an interesting concept. i like the idea of a main character who specializes in one ultra specific thing that makes him valuable in a world where it'd be useful, but hated or laughed at for in his original world.
unfortunately, the author fell down the common trope of making every other character---besides the mc---inexplicably incompetent. Instead of being capable problem-solvers like they should be given their status as high-ranking members of a major clan, they stand around clueless in basically every scenario until the MC steps in with a painfully obvious solution, just for the author to have everyone around him shower him with praise as a once-in-a-century genius.
it's the worst part of these stories, they can't create actual character depth within their main character, so they dumb down every other character around him to make him seem important. any satisfaction i got from the story's intriguing concept immediately vanished the second i realized that.