Maybe the Hogyoku was Urahara's failed experiment, and he has the true Hogyoku. But this time he turned the Hogyoku into an actual person. That person is Ichigo. So the hogyoku that Aizen has is Ichigo's brother. But since Aizen is essentially fused with the hogyoku, so that makes Aizen Ichigo's brother, and Urahara is the father of both of them!!!!! But Isshin is also Ichigo's father!!!! SO ICHIGO HAS 2 FATHERS ZOMGZ!