Cuchillo. Spanish for knife. The side group of Aizen's army. The only ones above them are the espada and Aizen himself, with Gin and Tosen finding their own space above them too.
Ten places, strongest being one and weakest ten. You can apply for a place and will receive it as long as no one else holds it. If someone does, you fight. Winner gets the place. Loser leaves. If you want to move up the ranks, the same protocol applies.
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Uniform is optional but is the opposite of the Espadas, meaning it's black.
