Even at 25% he should still be S-Rank at the MINIMUM, Because he was in constant combat for 100 years, at 100% he should be stronger than every hunter on earth combined
This series is so dumb lol. Such an effortless knockoff of solo leveling that just trips and stumbles through the story telling hoops to get to the power trip moments. Protagonist is referred to as the "veteran healer" in the title but he's actually just an isekai skill thief surrounded by absolute jobber characters that the author treats as if we already read for 1000 chapters.