Sterek universe travel

[bingereaderhere]

So I am looking for a steric fanfic in which everyone is dead in the pack I’m pretty sure at the very beginning so styles robs Deaton and puts a bunch of different magical ingredients in his backpack and then he’s walking in the preserve for a very long time then crashes and then sees derek and introduces himself and derek is angry and is like, that’s not funny dude Stiles is dead. and it turns out that style was transported to a different universe where as a 10 year old kid, he rescued the hales from the fire and died. Also like he was dressed up like batman.

thank you so much for all the help that I get!!!

I found it on my own
its last man standing by RivanWarrioress

https://archiveofourown.org/works/2417921/chapters/5485430#workskin