The Visit

((Slow updates! This is a writing challenge-like thing I do when I feel like doing it, so don't expect a lot of updates. I will update sometimes, though.))
((Human!Harry Potter!Hetalia AU))

When the Muggleborn Arthur gets a visit from a man who introduces himself as "Neville Longbottom, teacher Herbology at the Hogwarts School of Witchcraft and Wizardry", his life changes drastically, and takes a turn he had not expected it to.