User blog comment:Vocaloids4life/Miyako: my own original vocaloid/@comment-32500188-20150518114952

Even though it's becomming a dead horse being beaten here:

1. Yamaha's Approval

2. $$$$$$$$$$$$$$$$$

3. Staff/equipment/production/etc.

4. How to market to consumers/make a profit from money lost in production financing

5. Pray that the lucky stars from heaven shine upon you to sell required number of units to make said profit.

Like it's been said, UTAU is the way to go if you're planning on making a VB for your character... if not, then it's technically a fanloid. One thing is certain in any given case: it's definitely not a VOCALOID unless you've achieved the #1 on the list.