I keep seeing this concept pop up in LitRPG and progression fantasy circles, but I'm always a bit thrown by how different authors treat it. Some focus purely on brute force—like, their sword swings cut mountains in half and they get stronger by absorbing demon cores or something. That's fun for power-wish-fulfillment, but it gets old fast.
What I find more interesting are the systems where the 'emperor' title implies a kind of metaphysical authority. Like, in 'The Legendary Moonlight Sculptor', the Sword Emperor isn't just strong, he commands sword intent that can dominate other swordsmen mentally. That feels more like a ruler's power.
Then you've got the cultivation-style ones where the emperor's rise is built on a foundation of laws—he doesn't just use a sword, he embodies the concept of cutting or sharpness itself. The power becomes less about muscles and more about understanding reality. Makes you wonder if the 'dominance' is over the world's rules, not just people.
I kinda bounce off the ones where it's just endless duels and tourneys, though. Without that deeper system, the 'emperor' part feels unearned.