How about this?
Odachi
Katsuo can team up with Regan and dual-wield. And when the going gets rough, Regan can resume human form and, I dunno, pick up another weapon? Bwahahahahahahahaha
Edit: Oh, is that a thing? Family can wield each other? Well, she can just keep normal weapons with her, then.
I should really just READ Soul Eater.
How about this?Odachi
If it was only mentioned in the anime, theeeeeeen I dunno if I care about that detail.
<Snipped quote by CirusArvennicus>
I mean, it's in the manga as well, but it's not really expanded upon, I did say 'also'
But generally, it seems weapons cannot wield another weapon, unless they are tied by familial bonds (blood related) is what has been said in Soul Eater
I had a Manriki weapon once, and it was incredibly efficient in the RP. Also what's wrong with a Chakram that can control it's own movement through the air?