Kink is: Revolutionary War on the field after a battle. It'd be awesome if bloodplay was involved, be it accidental or otherwise.... It'd be REALLY awesome if Arthur keeps trying to win, even though it's clear Alfred's won. Make it angsty, and dark, anon!
America discovers that England, as befits an old European nation, dances masterfully, is very elegant and smooth and just flows on the dance floor.
He gets obsessed with the idea of dancing with England, putting his hands on his lower back, dipping him, etc, and starts fantasizing about his slim figure, little weight, less muscle and smaller stature. Anon has a huge size kink and another for dancing, so play with them, authoranons!
"America leaves England in charge of looking after his mochimerica for a few days but conveniently forgets to tell him just how to look after them. They begin multiplying and... "