User blog comment:V3-CHAN/MAYUs BROKEN!!!!!!/@comment-25352448-20150101215015/@comment-53539-20150104094058

The serial code is the thing that you get when you legitly buy voclaoid.

If you enter no code then Vocaloid remains a demo. This is the same for any vocaloid, regardless of if or not they have a demo out for anyone to download. Face it myself with my vocaloids.