crack_van | 9/10ths of the Law by tsukinofaerii (PG-13)

Fandom: TEEN WOLF/SUPERNATURAL
Pairing: Derek/Stiles
Length: 6,875 words
Author on LJ:

tsukinofaerii
Author Website: AO3 profile
Why this must be read:

I have no idea how or why it happened, but demon!Stiles is a Thing in Teen Wolf fandoms. There are roughly a gaziliion demon!AU gifsets and manips floating around tumblr, and several fics on AO3. This is one of my favourites; and since it's Crossover Day, enjoy a bonus appearance by the Winchesters!

I love how much this hurts, how the demon fights feelings every step of the way and they still overpower him. More than anything, I enjoy how Derek sees through him and still hangs on, despite everything. Well worth a read!

The problem with playing human was that he was the only one playing.

When he was ten, his mother got sick. Permanently sick. He could see it in her. It shined in the way her soul loosened its grip on her body, long before she even started showing symptoms. It was a slow burn, not the sort of thing that anyone could fight. Not cancer, not anything that could be burned out of her. Her body just started to give up, no matter what they did to try and keep her. His father tried—God, how he tried, working extra hours to afford her treatments, making himself sick with effort and tears and denial. But humans were fragile, and disease was relentless.

Stiles—that was his name by then, a name he chose that was more real than the one he'd been wearing for centuries, and definitely not the one on the birth certificate—was fourteen when the disease finally finished its course. He stood guard in her room when it happened, holding her left hand while his father slept curled up next to her on the narrow hospital bed.

Over the years, other demons had appeared in Beacon Hills, wandering souls looking for an easy mark. The burning of the Hale house had been a tempting sign for them, a hint of something more. He'd run most of them off, but there were always one or two. Demons like them hung out in the long-term care facility, waiting for the next flat line. They'd jump in and take over, leaving a stranger where someone's family had stood.

That wasn't going to happen to his mother.

9/10ths of the Law