アンハッピーリフレイン (Unhappy Refrain)

Background
This song was originally uploaded onto Nico Nico Douga on May 2, 2011. It has since reached over 1,000,000 views, becoming one of wowaka's popular songs, and making it into the Hall of Legend.

The lyrics are vauge and open to interpretation. A common interpretation is that Miku is unhappy with her life and commits suicide to find her happiness, and wherever she ends up she asks "So this is happy?". Like many of wowaka's songs, it makes references to other songs by him (Example: I've given up on my 'One More Time' = Rolling Girl).

This song is featured in the game -Project DIVA- f.

Japanese and Romaji Lyrics
それは？ sore wa?