Percy becoming the face of the resistance. The Aurors turning on Yaxley. Him finding out that she’d forged the last line of the prophecy, and being unduly shocked about it - really, did he never think to doubt it? Yaxley trying to escape, fighting him with all they had until Draco avada’d him as he was about to apparate away. Percy becoming Minister, Harry moving back to Britain, and finally, the peace they’d fought so hard to earn.