Y/N Potter is a girl in Slytherin, but not just any girl. She's a girl with a secret. Nobody in her family knows that she's a Slytherin. Everybody, except her brother Harry, thinks she's a Gryffindor. How will her friends react when they find out that she hides her Slytherin-self the moment she steps off of the Hogwarts Express? How will her family react when they finally find out that their sweet, little girl turns out to be an "evil, filthy" Slytherin? PSA: I don't own any of these characters. All characters are created by J.K. Rowling. Also I read in a couple of stories that @Yasmineamaro was credited for creating Mattheo Riddle, so hereby credits for them. Mattheo RiddleXY/N fanfic Finished on 5 March 2023