This is gotta be the most realistic vocaloid song so far.
Sounds good ? here's more : its not singed by human. Its created via Vocaloid, a singing synthesizer application software to be precise. 4 thumbs up for the creator of this song. Usually, you know if a song is created via vocaloid or not, for example, "I Like You, I Love You" singed by Kagamine Rin (not so realistic but very cute)