ASSUME

The Nogitsune tricks Derek into thinking he's having sex with Stiles. Only, plot twist: Derek knows it's the Nogitsune but he just wants to sleep with Stiles, even if only once and he might not ever get the chance. Read to find the second plot twist. IS BEING A BUTT. THE TITLE IS SUPPOSED TO BE ASS U ME BUT, NO THEY'VE GOT TO BE BUTTS.