Board Thread:General Discussion/@comment-24815992-20140522154132

Why can both use Getsuga Tensho? I thought Zanpakuto abilities were supposed to be individual. Is it just because Ichigo is half shinigami and therefore inherited the power from Isshin? And their Zanpakuto are relatively similar, Zangetsu (cutting moon) being Ichigo's and Engetsu (scathing moon) being Isshin's. Could this have anything to do with it? 