"Serpent of Two Times"

In 1890, Nyx Alteríe Gaunt is a seventh-year Slytherin, pureblood heir of a decaying line steeped in secrets, shadow magic, and whispered prophecy. A Gaunt by blood and a prodigy in the Dark Arts, Nyx is pale and sharp-eyed, her talent as feared as her name is ancient. She speaks Parseltongue, though she does not yet understand its legacy or the curse it carries.

She is known across the stone halls of Hogwarts as dangerous despite her delicate frame. A master of defense, a mistress of silence, and something off. As the 19th century prepares to close, Nyx stumbles across a strange, half-forgotten passageway carved behind the Defense Against the Dark Arts wing a hidden place few dare enter. Humming to herself and following something she can't quite name, she steps inside.

And never comes out.

A century later, in a warless 1998 where Voldemort never rose to power and the Golden Trio is finally enjoying their seventh year in peace, Harry, Ron, and Hermione discover an old spellbook filled with experimental incantations buried beneath the school's aging bones. In a moment of youthful curiosity, they cast a revealing charm deep in an abandoned corridor and rip time apart.

Nyx Gaunt, furious and disoriented, lands in their world with a wand in hand and poison in her voice. She doesn't understand what's happened, but she knows she doesn't belong. The castle knows it too. Ancient wards flicker. Magic around her bends. Something has changed and it isn't just the year.

As Nyx struggles to adapt to a Hogwarts filled with strange fashions, unfamiliar names, and students who laugh freely, she begins to unravel a frightening truth: someone or something has followed her through the glitch. A serpentine thread of fate tangled across timelines, pulling her toward a future that never existed... and a darkness that might still be waiting.

All the while, Harry can't shake the feeling that this girl this ghost of another age was never supposed to survive the crossing.