Undertow | Sebastian Sallow

Undertow | Sebastian Sallow

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WpMetadataReadMatureOngoing6h 8m
WpMetadataNoticeLast published Wed, Jul 22, 2026
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Fanfic
Wizarding World: Hogwarts Legacy
It's been ten years since Eleanor Blackwood left Hogwarts. She wasn't planning to come back - not really. But when the offer came to return as a guest lecturer in Alchemy, she said yes before she could talk herself out of it. She tells herself it's not about the past. Not about the people she left behind. Definitely not about him. Sebastian Sallow is still at the castle. Still sharp. Still complicated. Still feels like something unfinished. And then there's Garreth Weasley; kind, familiar, maybe something more. She doesn't know yet. But part of her wants to find out. But the thing is some feelings don't just fade. Some stay quiet until you walk back into the same room, and suddenly they're loud again. And that one question she's tried not to ask for years: If he had just answered... would everything be different? A slow-burn, second-chance story set years after Hogwarts Legacy. For anyone who's ever tried to move on but kept looking back anyway. Sebastian art by cassielassiebassie
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The year is 1892. Liya Chang, a Slytherin student in Hogwarts, possesses a rare ability to harness ancient magic. Yet, as the powerful force surges within her, she realises that this power is a double edged sword - she must quickly learn to control it, before it controls her. On the other side of the spectrum, Sebastian Sallow will do whatever it takes to find a cure for his sister, Anne, who was brutally cursed - even if that meant meddling in the dark arts. An unlikely friendship was forged between two fierce academic rivals. Liya and Sebastian, like two moths drawn to the flame, find themselves navigating a dangerous path together. Can they defeat the adversaries that lie in their way, or will they succumb to the magic they failed to control? Surely they should know that power corrupts... Power absolutely corrupts. Sebastian Sallow x Female Slytherin OC Third person POV | 7th Year | Academic rivals to lovers [ This story loosely follows the plot of Sebastian's quest line and will contain spoilers to the Hogwarts Legacy game. All characters except for Liya Chang belong to Portkey games, Warner Bros. Games, Avalanche software and the wizarding world franchise. All rights belong to them. Some dialogue and scenes are taken directly out of the game, and some will include additions that I have made, again, all rights to the creators. ] The cover is commissioned by ME and is drawn by @/stpchn Highest Ranking: #1 in Fanficromance out of 1000+ stories #1 in Fandom out of 1000+ stories

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