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No, I don't plan on wielding a katana. I just had an idea that since Kamistella is a fan of Kimchil, and she's also a bit of a battle-hardened lady, having some weapon skills, even if just for show, would be useful. And the choice fell on a katana specifically because of the katana from the mansion, but not for the katana itself, but simply because it caught my eye.
My character isn't a fighter, and on top of that, she's also a mage. Close combat doesn't seem like a good investment for such a non-physical character.