Board Thread:General Discussion/@comment-12611839-20130718170314/@comment-25032153-20141111104908

well for Ichigo to get Mugetsu which is when he mergered with Zengetsu meaning that when he was trying to get it the two sides of his power had to merger as we saw in the show and manga and the quuincy power did release Ichigos full power for a short will but then because Ichigo had to use the full power he lost both powers for a short will. Ichigo as saw that the two powers as one which was Zangetsu.