Board Thread:Questions and Answers/@comment-9826910-20130618064245/@comment-11477779-20130723085947

Sternritter M wrote: What does OJT mean? :P

On the Job Training. Since the beginning most of what Ichigo has learned has been in the heat of battle with the exception of the training he did with Urahara and the Visored. The similarities between Engetsu and Zangetsu might not set off any alarm bells, but the Getsuga Tenshô attack certainly should've for anyone familiar with Isshin using it. Not too troubling though. Who all saw Ichigo use Getsuga? Quite likely neither Rukia, Renji, nor Hanataro would recognize it. Byakuya might if he was present at Isshin's CPT AND ever even bothered to care, although he didn't act like he was familiar with it during their fight. Anyone else who would've recognized it either never saw Ichigo use it or had an agenda to keep it to themselves.