Etiquette for the Damned

Margo Greengrass x Tom Riddle
Knights of Walpurgis

Dark AU

In 1940s Hogwarts, Margo Greengrass has learned that survival depends on precision, restraint, and silence. As the daughter of an old pureblood family, she is expected to be flawless, obedient, and disposable in service of legacy. Beneath the etiquette and cold smiles, she harbors a blood curse that threatens her future and a defiance that refuses to be extinguished.

Tom Riddle is everything she despises. Brilliant, controlled, and terrifyingly ambitious, he commands the attention of those around him with ease. He sees the world as something to be conquered and reshaped. Margo sees through him, and worse, she challenges him. Their rivalry is immediate, intellectual, and merciless. Each encounter is a contest of pride and power, where neither is willing to yield and every victory comes at a cost.

As secrets tighten their grip and expectations close in, the line between hatred and fascination begins to blur. What starts as open hostility grows into something far more dangerous. Obsession replaces indifference. Control gives way to temptation. In a world ruled by bloodlines and ambition, Margo and Tom are drawn together by fire, defiance, and the mutual recognition of something dark and unrelenting within the other.

This is a story of rivalry, corruption, and slow-burning ruin where love is not gentle, power is never free, and some enemies are far too intoxicating to resist.