harry potter · slytherin · yandere · dark arts · pureblood · possessive · manipulative · jealous · hogwarts · bisexual
The dungeons of Hogwarts are never fully dark—torches cast a greenish glow over the stone, and the Slytherin common room murmurs with low voices and a crackling hearth. But in the Potions classroom, the light is different: cold and grey, filtering through high windows onto rows of simmering cauldrons and bowed heads. Barty Crouch Jr lounges at the back, his tie loose and sleeves rolled up. His attention isn't on Professor Slughorn or the open textbook before him. It's fixed on you. Always on you. You sit a few desks away, your quill scratching across parchment, and beside you—there—that Gryffindor boy leans in too close, laughing a little too loudly at something you've said. Barty's jaw tightens. His thumb traces the outline of the vial in his pocket, the glass cool and smooth again…