She is a member of the singing group, New DUP, which was founded by BROCCOLI Inc. to promote its mascot characters, Dejiko, Usada and Puchiko (from the anime Di Gi Charat), where Minakami is the voice actress for Puchiko.
Her blood type is B, and she has a lot of hobbies include reading, eating, and so on.
As 2008 is the tenth anniversary of the series Di Gi Charat, BROCCOLI Inc. decided to recast actress of main characters of series Di Gi Charat. Minakami's career as a voice actress started when she won the audition for a character from the forementioned series, Puchiko, in January, 2008. She was chosen for the role among over a thousand candidates. In the same month, the new cast of Degiko, Puchiko and Usada, who are Satomi Akesaka, Nao Minakami and Rieka Yazawa respectively, founded New DUP, a J-Pop group, to promote series Di Gi Charat and to help launch the voice actresses' careers.