Reviewed by Kana
Who it's for, and whether it holds up.
The early chapters of "First Immortal of the Sword" are its best. The reincarnated MC doesn't have to painstakingly re-cultivate everything he already mastered, which sidesteps one of the genre's most tedious conventions. His contemptuous, unhurried attitude makes sense for someone who already reached the apex once. He also shares knowledge from his past life without hoarding it like a precious resource, which is a small but welcome choice.
The translation is solid, and for the first stretch the story moves well. Then it settles into a groove it never leaves: MC meets arrogant young master, young master underestimates him, young master dies. Repeat. The world-hopping introduced later compounds the problem, making the whole thing feel like a sequence of identical arenas with different wallpaper.
There's also a specific scene, late in the story, where the MC sentences a defeated female opponent to sexual slavery. It's not framed with any critical weight. That's a hard stop for a lot of readers, and reasonably so.
This is a 3 out of 5 in practice: some genuine appeal in the setup, steadily diminishing returns as it goes, and at least one moment that goes beyond "problematic tropes" into something more actively unpleasant. Worth the first few dozen chapters if you want comfort-food cultivation. Not worth the long haul.