katana is ew.
The blade shouldn't be so wide and round.  The point of a katana was to move through the air very fast.  Try making it without using a cylinder, and a good blockland sword should use way fewer polys.
Incorrect term usage.

~4000 verticies, 6700 faces.
Constructed of cubes and hexagons.
high-poly. But blocko. If you're going to pull the whole "it doesnt fit blockland" bit, at least do it right.
I'm back people!!
And if that picture is meant to show us that you can model a sword...




..then you got much to learn, boi.