User blog comment:Gomez6/初音ミク -Project DIVA for the Wii U/@comment-3467648-20130618045742/@comment-5890674-20130618171001

Ah, but you've forgotten, World is Mine is Miku's most popular song, and thus is considered her theme song by many, so it'll have to be in it. Besides, the song was on the ios games, Miku Flicks and Miku's Live Stage Producer, and Sony doesn't own those devices.