User blog comment:AngelWings13/Is there any vocaloids that are a only child?/@comment-4238265-20130715215445/@comment-5532114-20130715232308

Woah, IA looks way more than 15! Like....16...

And the way OP formulated the question makes me think that they are asking whether there are any Vocaloids that do not have siblings.

Which... makes sense if you look at who Shojo-chan listed so I guess she was reffering to that?