| Haruka Nogizaka's Secret | |
 Light novel volume 1 | |
| 乃木坂春香の秘密 | |
|---|---|
| Genre | Romantic comedy |
| Light novel | |
| Written by | Yūsaku Igarashi |
| Illustrated by | Shaa |
| Published by | ASCII Media Works |
| Imprint | Dengeki Bunko |
| Demographic | Male |
| Original run | October 10, 2004 – July 10, 2012 |
| Volumes | 16 |
| Manga | |
| Written by | Yūsaku Igarashi |
| Illustrated by | Yasuhiro Miyama |
| Published by | ASCII Media Works |
| Magazine | Dengeki Moeoh |
| Demographic | Seinen |
| Original run | October 2006 – August 2010 |
| Volumes | 4 |
| Anime television series | |
| Directed by | Munenori Nawa |
| Written by | Gō Tamai |
| Music by | Takeshi Watanabe |
| Studio | Studio Barcelona |
| Licensed by | |
| Original network | CTC, tvk, TVS, Yomiuri TV, Chukyo TV, AT-X |
| Original run | July 3, 2008 – September 25, 2008 |
| Episodes | 12 |
| Anime television series | |
| Haruka Nogizaka's Secret: Purezza | |
| Directed by | Munenori Nawa |
| Written by | Gō Tamai |
| Music by | Takeshi Watanabe |
| Studio | Studio Barcelona |
| Licensed by |
|
| Original network | Yomiuri TV, Tokyo MX, AT-X, tvk |
| Original run | October 6, 2009 – December 22, 2009 |
| Episodes | 12 |
| Original video animation | |
| Haruka Nogizaka's Secret: Finale | |
| Directed by | Munenori Nawa |
| Written by | Gō Tamai |
| Studio | Studio Barcelona |
| Released | August 17, 2012 – November 25, 2012 |
| Runtime | 24 minutes each |
| Episodes | 4 |
| Video games | |
| |
| Related work | |
Haruka Nogizaka's Secret (Japanese: 乃木坂春香の秘密, Hepburn: Nogizaka Haruka no Himitsu) is a Japanese light novel series by Yūsaku Igarashi, with illustrations by Shaa. The series originally started serialization in MediaWorks' now-defunct light novel magazine Dengeki hp on June 18, 2004. The first novel was released in October 2004, and as of January 2012, 15 volumes have been published by ASCII Media Works under their Dengeki Bunko imprint. A manga adaptation by Yasuhiro Miyama was serialized in ASCII Media Works' Dengeki Moeoh between the October 2006 and August 2010 issues. An anime adaptation produced by Studio Barcelona aired between July and September 2008; a second anime season aired between October and December 2009. A visual novel for the PlayStation 2 was released in Japan in September 2008 and a second game for the PlayStation Portable was released for digital download in February 2010.