The heart of the alliance (HetaliaXreader)

A not so young country, Gleonia, named (Y/n) popped back up in the world and I mean came back from the dead kind of thing. Shocking all countries except her brothers, Buswil and Asnor. But what if you came back as a child? And no memories of them at all? Will the countries be able to hold theirselves and try not to sc...