User blog:CaiyinMusic/Androgynous Vocals? ( .-.)

Okay this is kind of a dump post because I just want to hear people's opinions...

So there was a commentor on one of my posts on Google+ who was confused about which Vocaloid is considered the "first" androgynous Vocaloid.

I'm pretty sure Flower is the first one to be advertised as androgynous but then another user brought up the point that YANHE also has an androgynous voice and was released two years before flower.

That kinda sparked a small confusion debate with someone adding that Iroha is also technically a ryouseirui Vocaloid.... What are your thoughts? Now I'm a bit muddled with who can be considered to be the "first" androgynous voice,,,,