And Then There Were None (Hetalia version)

They were invited to a house party on the beautiful, deserted island, Shipwreck Island. They thought it was going to be an amazing event, full of happiness and helping them become more social. But once a certain "U.N. Owen" begins to threaten their lives and slowly taking them, Roderich Edelstein, who wasn't suppossed to be there anyways, begins to investigate to find the murderer... (based off of the game Agatha Christie: And Then There Were None, with Hetalia characters)