A Lost One's Love ❤️ UK x France

UK and France have been friends ever since France arrived at the elementary school in 1st grade. Ever since the two have become great friends. Inseparable, a perfect match.
Everything was fine until UK slowly started missing weeks of school in 5th just plainly out of the blue. He would always return the next week, until one time when he was gone for about a full three.
Everybody asked France about his disaperance, as most knew about his relationship with UK by now. But France honestly didn't know, thus this worried himself out of his mind.
He decided to pay a visit to UK's house the next day, Saturday, so there was no school. He knocked but there wasn't a response. He called for UK. No response. France then felt someone cover his mouth and tape it shut, squirming, he tried to escape. Failing as the 'kidnapper' took him away and into a van.
France was thrown in the back of the van, only to be greeted by a sleeping UK in a cage. There was something fairly off about him tho. It seemed as if.. he had been fused with an animal in a werewolf-like situation. But rather then wolf, he was basically a wereDEER. France then felt a sharp pain in his neck and fainted.

Thus, where our story begins..

Warning:
This story will contain
•Violence
•Cursing(Or what I call "Storage Speech")
•Sensitive topics and names(Example: Mention of Countryhumans such as USSR, Third Reich, Imperial Japan, Matial Law-Maybe, and more.. possibly.)
•Blood/Gore
•Lots of sad boi hours
•United Kingdom X France(Of course)
And
•USSR X Third Reich