The Eighth Sin Emerges?(Meliodas X Reader!)

(Completed!) Y/N is a demon girl, but she's also the eighth sin that's been kept a secret from the world! Find out what will happen on her journey with Meliodas and Elizabeth along the way to find the six other sins! NOTICE: This will mainly follow the storyline of the show! Because of that, there WILL be a lot of act...