User blog comment:Xilinoc/Ch. 587 - The Headless Star 6 (for real this time)/@comment-5693502-20140702183403/@comment-24384892-20140702191223

Also, since Nimaiya is the creator of all Zanpakutous and knows more about them than anyone else, do you think it's possible that he can control any Zanpakutou he wants, both Shikai and Bankai? Nimaiya must have some kind of special connection with Zanpakutous.