User blog comment:Fangowango/Inconsistencies/@comment-3996324-20130315114307

1. Aizen told it go there, he wanted to see Ichigo release his power.

2. well, the command of coming to find Rukia was given(indirectly) by Aizen. Since he controlled the central area where they give out important orders, it was easy for him to send members there "when" he wanted to.

3. Considering that they didn't capture him in a 100 years leads me to believe that at some point, the issues between the SS and him were forgotten. Thus, there wasn't an issue in Rukia contacting him and establishing friendly relations.

4. Maybe he's the last of the "pure" Quincys. As in, not related to normal humans.