De-age (Tony, Bruce, Steve, Pepper) story + generic fic rec

[kilr.livejournal.com]

1. I'm looking for a specific fic where Tony de-ages himself (to about 12-14). Bruce tries to reverese the de-aging and accidentally de-ages himself, Pepper and Steve in the process (to the same age). Natasha and Clint shows up and tries to save the situation. Bruce is scared of Clint. Natasha takes Bruce out shopping. Pepper kisses Steve. I also think Pepper gives either Bruce or Tony a black eye? This fic is a part of a series and is on ao3. I've been looking for this fic for quite some time and would be grateful if anyone could point me in the right direction.

2. Could you recommend me one or two fics from this fandom that you concider to be the best? No lenght requirement. Any and all pairings and themes are welcome as long as the fic is extremelly well written (proper grammar, in character, emotional impact and so on).

Thank you! ♡

Found: in comments!

specific fic: sg1 crossover - dean winchester is charlie o'neill

[erica raab]

Been looking all over for this.
There's a SPN & SG-1 crossover, featuring Dean and Jack O'Neill as the main characters, and there's a revelation that Dean is actually Jack's son Charlie, who was thought to have died before SG-1 series started.  This was revealed through little traits and also a scar on Dean's head were Charlie accidentally shot himself.
If I recall correctly Dean still thought of himself as John's son, but was fine with a tentative relationship with Jack.
Any help would give me some peace of mind!