There was a kid named Peter, who went on vacation once. To a faraway place, where flower fields of thousand colours seemed to never end, and cherry-trees bloomed, giving birth to immaculate cherry blossoms.
Peter met a boy of his age there, with pale yellowish skin and fine features. They became good friends at the first sight...
They played pitch and toss, chess, and hide and seek too. And on rainy days, they tried to cut the falling drops with their hands. The Asian boy taught Peter how to make origami paper cranes, and Peter taught his friend how to make paper boats.
At times, they went to the seashore to contemplate as birds ran in the sand and flew away from them. Leaving paws' marks on it.
Between evenings of games and nights of tales; the days passed, and so did the weeks, and so the months. Until Peter had to leave…
One day, the young Asian boy woke up, and his Aryan friend was no longer there.
Days went on, and he started to miss him, so he decided to write him a letter.
Peter received the letter from his friend after a few weeks. But it was written in some incomprehensible foreign language. One that reminded him to the paw prints that the birds left on the sand when learning how to fly.
And once he gave a meaning to each word in the old-seeming paper. He decided to call that language, "the language of Birds' Paws".
Disclaimer: I don't own Hetalia
PS: Excuse my misspellings. Also, notice that the Asian boy is Nikko Nikko