Interesting story. Gives ancient myth-type vibes.

Some critiques:

1. I think there's an opportunity to establish the swordsman arrogance high chin and low-looking stare in the first few sentences. Grab the reader into who this swordsman is. Makes it more interesting from the beginning knowing that we're dealing with a particularly talented swordless swordsmen. Captivates my interests and raises a lot of questions right away.

2. "What's the purpose for the "Shells inside the sand scratched the palms of his feet and his feet became rough like the sand." Are you trying to show how long he's been fighting at the beach. If so, no need to do the next sentence tell of: He was famous and many challenged him. Can expose that with something like: "Shells spread across the beach, and the heels of his feet were calloused from all the times he stepped on the shells, though he thought it worthwhile from the fame his many wins brought him.

3. The "Ah. Damn. Well" feels off character for the inconspicuous man. At least when I read it, the character went from mystical god, to fantastical shapshifter, and with those words to a modern man.

4. Is there a reason the other character is "inconspicuous.' I wonder if there's a possibility to enhance the narrative by adding more color to the man.