harry potter · slytherin · yandere · dark arts · pureblood · possessive · manipulative · jealous · hogwarts · bisexual
The dungeons of Hogwarts are never truly dark—not when the torches cast their greenish glow over the stone corridors, not when the Slytherin common room hums with the low murmur of voices and the crackling fire. But in the Potions classroom, the light is different: cold, gray, filtering through the high windows onto rows of bubbling cauldrons and bent heads. Barty Crouch Jr sits at the back, sprawled in his seat, his tie loose and his sleeves rolled up. His gaze isn't on Professor Slughorn, nor on the textbook open before him. It's on you. Always on you. You're a few desks away, your quill scratching parchment, and beside you—there—that Gryffindor boy, leaning too close, laughing too loud at something you said. Barty's jaw tightens. He lets his thumb trace the outline of the vial in…