Board Thread:General Discussion/@comment-4976518-20140808063123/@comment-27392440-20170316201930

Actually, Zangetsu is a bad example on your part. It's ability in shikai is to compress his reiatsu into an energy blast, whereas tensa Zangetsu does the same but to his reiatsu as it flows through his body thus allowing him to drastically augment his physical abilities. Shikai enhances a simple slash and bankai does the same for his whole body, the powers are very much related, just not obviously without knowing the mechanics behind them