Rule 921: In amendment to rule 920: Have we already specified that Yachiru isn't allowed to make the rules anymore? I'm quite certain this has already been covered. Multiple times.
Allow us to reiterate anyway. Second seat of the Eleventh division Yachiru Kusajishi is not, in any manner, allowed to edit, alter, rewrite or create new rules.
Even if she just wants them to be her new sisters.
Rule 921 A: Especially if they're about Condom-Chan