Kensaku (Retrieve) Koe (Voice): An UTAUloid. Age unknown. She is merely a hologram that gravity affects. Can't touch or feel; she would simply pass through the object. You probably wouldn't tell she isn't human at first sight.
Ever-changing, pretty much.
Earphones, mic and volume set, clothes, etc. (Note: on the top of her headphones you can see the volume controls.)
Avocado maki!!
No history for yuu. >_>