User blog comment:Xilinoc/Ch. 636 - Sensitive Monster/@comment-10497166-20150723101510/@comment-10497166-20150723173021

But then mayuri and zaraki fighting souken will have no real point as neither of them have any sort of connection to him ,any bond that will make it harder for them to fight him. If i were to use any previous character as an enemy then i'd use them against an opponent who was really close to the person i.e for zaraki-yachiru or for uryu it would be souken. Kubo did this thing previously in the arrancar arc where they paired gin against izuru and rangiku and komamura and hisagi against tosen.That way the excessively large number of heroes would have a disadvantage in this fight.