1 Work in Deucalion/Jackson Whittemore
Stiles gave everything for Scott's pack for two years, then they all leave him behind.
He protects Beacon Hills for sixteen years before he is forced to accept no one will be able to live through the hell mouth that is Beacon Hills, when Peter dies it's the last straw and as he lies upon the stump of the Nemeton tree he ends his life.
But fate didn't seem to get the memo ... he's alive and sixteen years back in time, to before Scott was bit and where Peter and his dad are alive.
Maybe things aren't too bad.
The first chapter is based on RayShippouUchiha’s fic Robber Foxes (Have No Fear) so go ahead and credit them.