[Captain America/Avengers] The Great One's Dark Past (Forum Format)

A sudden idea that popped into my head. Basically, it’s about how the secret identity @ForeverSixteen came to be, and how, after receiving a disciplinary confinement once, its owner resolved to become a forum legend. You could probably call it an... extra to all my previous forum-style stories? Or maybe a prequel to an idea I haven’t gotten around to starting yet, but will probably finish someday. The main pairing is Steve/Bucky, either way around. Other pairings include Tony/Jarvis, Natasha/Clint, and Vision/Wanda, though the last two are only mentioned in passing. The basic setting is still the same: everyone is tolerant and easygoing about the fanfiction written about them, even Loki, god of tsundere, who “doesn’t deign to concern himself with the spiritually malnourishing fast food that is the Midgardian ants’ idle amusement.” (Loki’s words.) Jarvis is the forum administrator, and every board moderator has a secret identity belonging to Jarvis. The Avengers know one another’s main accounts, but don’t know who has what other alt accounts. Nobody else knows the Avengers’ secret identities. In this story... nobody’s secret identity gets exposed, actually. To avoid plot holes, I still have to insist that the moderators and administrators never specifically look up users’ IP addresses. Theme: