User blog comment:Sicarius001/Royal Guard and Eighth Division Captain/@comment-8589859-20130423081917/@comment-7658432-20130501001724

Nah, he can train wherever he wants. If you're pointing out that he's training in secrecy, there's no need as he is considered Captain class and was given promotions that he declined because of his loyalty to our mighty Captain Commander. It is limited though, because he could potentially destroy a part of Soul Society (much like Hitsugaya's training in the caves).