Bleach: April Fools Day!

It's April Fools in the Soul Society, and there's a full-out prank war for the title "Prank King" or "Prank Queen"! It's all fun and games at first... but then a fun competition gets turned into something a lot more deadly... This fanfiction is after Aizen's betrayal, and I may not be making some characters sadder because it's supposed to be more uplifting. A small but of OOCness.