The song is How Far I'll Go from Disney's Moana. I used Iceland, England, and Cyprus, because all three countries are in Hetalia, are islands, and have a seafaring history and/or culture.
I got so many feelings while I made this, even got teary eyed. Such an amazing song, really 表示中 their close relationship. I 愛 this pairing so much, so I hope people are about too see the love, bond, and loyalty between them with this video
Just this cute little video of ヘタリア characters(most of them) to Kagamine Rin's 'I like あなた i 愛 you.' Don't like Vocaloid(which i would find strange since your アニメ fan) don't click then!