Lost Letters (Hetalia: FrUk)
10 parts Complete MatureEngland wrote a letter once, many, many years ago. A confession of sorts. He set it out to be mailed one day, but it was lost to the sands of times, and never reached its destination.
It's recipient, the Country of France, is unknowing of the lost letter, until one day he visits a museum with his English frienemy.
There, the letter is discovered, and there, the confession is finally brought to light.
(MAY CONTAIN MATURE CONTENT)