This is a version of 2p!HetaOni, created by Italy-PastaLove and Akiraka-chan.
2p!HetaOni is based on HetaOni, which in turn is based on Ao Oni. The idea and story is essentially the same as HetaOni, with the aim being to escape the Mansion. The twist is that instead of featuring the canon characters, it features the 2p!Hetalia cast.
2p!Italy, 2p!Germany, 2p!Prussia and 2p!Japan approach an old, abandoned House, three hours on foot from the world summit place.
Upon entering, they hear something crash. 2p!Japan volunteers to go and investigate. After discovering it was just a broken plate, he goes back to the others, to discover them gone.
He assumes they left without him and attempts to leave, but finds he can't. After a few attempts, he decides to look for another way out.
As he continues along, he meets a 2p!version of The Thing and finds his "friends" didn't abandon him.
Currently, they are looking for 2p!Italy.
Coming sooner or later.