Prompt: Request is out of season, unless someone fabulous like France or Poland is the one hosting the party.
A Nation’s holding a costume party. Any costume will do, but there’s a special prize for the nations who dressed the most scarily or shockingly. Also, guests must come in pairs (though they may not necessarily be together).
Russia, who was not invited and knows nothing of the party, comes home to find America not-to-sneakily going through his things. Later, after the fight, he discovers that America (figuring he’s going with England, who’s actually going with someone else) decided to go for the prize. He’s the hero, number one! America’s costume: he’s going as Russia.
After the initial refusal and England’s “betrayal”, a deal is formed. America would go to the party, dressed as Russia. But only if he brings along Russia,who is dressed as America.
In the process of “research” (they’ve got to get the character right!), sexytiems ensue.
Writer!anon can do whatever they like! Drunk sex as America learns to drink like Russia? America teaching Russia how to do the “HERO” pose? Geography lesson for America, complete with maps and pictures, since he has to know who’ll he insist will become one with him? America putting Russia in a pair of jeans? I don’t know, go for it, anons!
BONUS1: At the party, America pulls off a very convincing “KolKolKol” chant/face and Russia pulls off the hero pose complete with waving flag behind him and sparkling smile.
BONUS2: At least one person faints and England is yelled at for allowing this to happen.
BONUS3: Canada and Belarus are roped in. Though the problem there is that Belarus makes a bad Canada (threatening, who wants to become one with “America”) and Canada makes a very good Belarus, thoroughly scaring America.