"Why did the final Getsuga Tensho take away Ichigo's Shinigami powers"@en . . "Unknown. The only thing we know, is that Zangetsu told him he would lose his powers if he used Final Getsuga Tensho."@en . . . "Unknown. The only thing we know, is that Zangetsu told him he would lose his powers if he used Final Getsuga Tensho."@en .