ボーナスステージ (Bonus Stage)

Background
The song was first uploaded on May 8, 2011; as one of the tracks for the compilation Kagamination (and was one of the tracks that made it into kagamination ZERO. It currently has over 680,100 views; making it one of Owata-P's most notable works; the others being his Benzene Series ("Paradichlorobenzene" and "Antichlorobenzene"), and "Rin-chan Nau!"

Despite the somewhat cheerful song, it tells a story of the Kagamines' not wanting to "grow up", thus them "having fun" throughout the song. They think growing up into adults, they won't have the same fun they have right then. So it's better for them to enjoy the time they have while they still can.

This song is featured in the EXIT TUNES compilation album Vocalotwinkle