So I thought about making a stereotypically weeby Sword Saint with a katana when I realized katanas aren't a weapon in the base game!
So I thought well surely some weeb has already modded in katanas and was surprised to find out this doesn't seem to be the case!
So I come before you to request that one of you mod wizards make one!
A katana obviously.
An elven curved blade might work as a model if a custom model is not possible for whatever reason.
Modify any existing feats that would work with a katana to work with a katana (if any exist).
Add as many katana specific feats as possible such as Daisho Expertise, Weapon Expertise, Focus and Proficiency feats.