I am looking for a specific fic where all of the Avengers, except Tony, are alphas. Tony is an Omega. It is definitely noncon. Its from Steve's perspective and he is thinking about how Alpha/Omega dynamics have changed since the 40s. He views Tony's behavior as extemely inappropriate for an Omega (being flamboyant, casually touching his Alpha teammates, and just general Tony-ness). Since he is the team leader, he figures it is his respmsibility to take Tony in hand to essentially punish/reeducate him.
After a night where Tony is drunkenly horsing around with his teammates, Steve gets fed up and hauls him into his room where is forces Tony to "present," a technique done in the 40s by Alphas to calm "wayward" and "out of control" Omegas. He forces Tony to strip and kneel and then ejaculates on him. At first, Tony is pissed at Steve for essentially slut shaming him, but when Steve forces him into this position (hurting him along the way) he, understandbly, gets scared. Steve, thinking he is doung "what is best," has Tony sleep in his room to comfort him. The next morning, another Avenger finds Tony in Steves room and flips out, obviously.
Much later, after Tony has collected himself, he recognizes how "ritualistic" Steve's behavior was, and he actually gathers Steve and the Avengers together to discuss prejudices and problematic behavior from the 40s that Steve wasnt reeducated on by SHIELD when he woke up. Steve is exceedingly ashamed and sickened when he realizes what he has done.
If this is familiar, please let me know! i have combed through every tag i can think of on ao3. I cant think of another place it couldve been archived at?