|First Appearance:||File 1: Mystery Case at the love hotel-Chu!|
|Number of Episode|
Okada Nana (岡田奈々?) is a High School Detective in the Joshikou Keisatsu series. She has two police pin-badges, one at the knot of her seifuku necktie and the other as a hair pin. She is portrayed by Okada Nana.