COMPLETED - UNDER VERY SLOW EDITING (edited chapters have ☆☆) "I despise you, Sirius Black." "No, no you don't." ☆☆☆ (Y/n) (l/n): the living, breathing example of a perfect Slytherin. A pureblood from a wealthy family, an A-grade student, a sworn rival to the Gryffindor Quidditch team, and a close friend of Regulus Black. Her sixth year at Hogwarts was expected to be just that: perfect. But throw in a project and a match made in hell, and (y/n) is stuck working with the infamous Sirius Black. (Y/n) had her last years at Hogwarts planned to her liking, but with the Marauders around, of course, nothing ever goes as expected. To think it all started because of a project... ☆☆☆ Slytherin female reader The art used in the cover belongs to @fircbolt on IG. Permission was asked to use 250,000+ words