At first, she was made just for Mui's genderbend purpose, but due to Kureno recorded her voice too, now she's solely an UTAU. This is demo for her voice :
DEMO Shinkai Summit-Madane Mai by kamuination
Now Kai and Mui's voicebanks are up to ACT.2!
Demo for Mui's ACT.2 :
Madane Mui - Panda Hero (DEMO) by kamuination
Demo for Kai's ACT.2 :
Shindoune Kai - Mermaid (DEMO) by Kairi-beaver