Board Thread:General Discussion/@comment-24815992-20140717195349/@comment-24815992-20140721200705

@Stefan (Shikai - "Rust & Shatter") we've only really ever had hints i suppose, because of his portable gigai, but also he did take his Reiatsu blocking Gigai with him when he left Soul Society in order to improve it, and one would reason that he did use it himself for a time in order to avoid detection by Soul Society.