The author is a Nicovideo singer since Apr. 2008. Nana Mitani covers many famous Vocaloid songs and has reputation in the Nicovideo community. She stretches her activity to stage as an amateur singer recently. Nana Mitani in the Utauloid figure was created as an April Fool's Joke in 2010, and her voicebank was release for UTAU platform and available for public use. The image of the character does not have any relationship with the singer herself.