User blog comment:AngelWings13/Is there any vocaloids that are a only child?/@comment-4238265-20130715215445/@comment-5532114-20130716025409

I'm just saying specifying age becomes harder after certain point of growing up. When you see a young person you can never be sure if they are still a teenager or a young adult already. There are no fixed characteristics that can help you tell the difference between 15 and 16 years old kid.