One Piece: The Sword God Kuina, Starting from the Grave!

Kuina was the most fragile kid who got taken down by that towering staircase; she didn't seem as good as Bonnie, the super kid.

It's a martial arts-themed game trying to ride the coattails of One Piece, but it doesn't adhere to basic world-building logic and doesn't even understand its target audience.

At first, I thought the protagonist would grow up on his own... But then it turned into a gang war...

Why is this guy still at this level? Did he somehow get inexplicably thwarted again this time?

The result was the establishment of a bounty guild, with too many hidden agendas.

Midanther, an assassin Xiluo

Are you really only writing martial arts stories? That doesn't seem to fit with action-packed manga.

Shouldn't Kuina start learning some naval techniques? It seems the protagonist relies too much on the system; she hasn't learned anything beyond what the system provides. Naval techniques like Moonwalk, Shave, and Paper Drawing are all good, and there's also Life Return—she can become stronger simply by consuming things and perfectly control her body.

You could consider the Peerless Sword Box from The Legend of the Young Swordsman.

It's pretty good. Keep it up, female lead, hurry up and start cultivating!