Crypton Future Media intended to project a Vocaloid with low-teen girl's voice at first following Miku Hatsune, but there was a demand for a boy's voice, so Crypton Future Media hired a voice actress who can produce both sounds. The package included two voice banks: one for Rin and another for Len. Despite the double voice banks, the package was priced at the same price as Miku Hatsune.
Voicebank was derived from Shimoda Asami.
Daughter of Evil
I Can Take Off My Panties!
Pantsu Nugeru Mon!
I Like You, I Love You
The Riddle Solver Who Won't Solve Riddles