I’ll start this by saying that I still don’t think it’s been found.
well, there is this: fanfiction.net/s/72643… but I’m not sure if it’s the one you’re thinking of…
WWIII by LoveFueledHate
This story is very good, and I’m still working my way through reading it. I don’t remember it, so I don’t think it’s the one I’m looking for.
The only thing that comes to mind is this…http://xmen-firstkink.livejournal.com/7736.html?thread=14997048&#t14997048
Ruiner by Anonymous
on X-Men First Kink
This is definitely a story that I check in my bookmarks everyday because it is amazing. But it’s not the one I’m looking for.
I’m not sure but I think it’s this fic, if it’s not then I suggest it. It’s StarRose LiveJournal series We Met at the Park. Hope it helps.
We Met At The Park by Starrose
I don’t think I’ve read this, though I definitely intend to now. But nope. I’m definitely looking for a fic where they have powers because all I can remember is Shaw/Frost using sedatives to wreak havoc on Charles’ mental shields.