Oh shit, if Ashley was not killed by magic then who the hell Nishina is? Alternatively Cotton might finished him off with magic so that he could reincarnated.
So Nishina said Ashley knew not one, but two top secrets through overhearing someone who he can't remember? You can't blame people for suspecting him, though it's not like Otomo to be on the edge like that.
Wait a minute, Ashley actually overheard about Glen's paternity, and the location matches Nishina's description. So Nishina is the real deal after all? If not, then the only other possibility is Lucas himself.