The Nogizaka Haruka no Himitsu animated television series is based on the light novel series of the same name written by Yūsaku Igarashi and illustrated by Shaa. The episodes, produced by Studio Barcelona, are directed by Munenori Nawa, written by Tsuyoshi Tamai, and features character design by Satoshi Ishino who based the designs on Shaa's original concept. A pre-broadcast aired on July 3, 2008 and twelve episodes were produced which aired in Japan between July 10 and September 25, 2008 on Chiba TV and TV Kanagawa. Six DVD compilation volumes were released by Geneon Entertainment between September 26, 2008 and February 27, 2009. A Blu-ray disc box set of the series was released in Japan on September 26, 2009.