Ohime-sama Navigation
Hime (top-left), Kari (bottom-left), and Crystal (right) of Ohime-sama Navigation.
おひめさまナビゲーション (Ohime-sama Nabigēshon)
Genre	Harem
Light novel
Written by	Satz
Illustrated by	Naru Nanao
Published by	ASCII Media Works
Magazine	Dengeki G's Magazine
Demographic	Male
Original run	February 2008 – May 2011
Manga
Hime Navi & Hime Navi Evolution
Written by	Satz
Illustrated by	Raina
Published by	ASCII Media Works
Magazine	Dengeki G's Magazine
Demographic	Seinen
Original run	June 2008 – June 2010
Volumes	1
Manga
Written by	Satz
Illustrated by	Yūki Takami
Published by	ASCII Media Works
Magazine	Dengeki G's Magazine
Demographic	Seinen
Original run	November 2008 – June 2010
Volumes	3

Ohime-sama Navigation (おひめさまナビゲーション, Ohime-sama Nabigēshon, lit. Princess Navigation), with the subtitles Otogibanashi Uranai (おとぎばなしうらない, lit. Fairy tale divination) and Which Girl do you Trust?, is a reader-participation game in the Japanese bishōjo magazine Dengeki G's Magazine, published by ASCII Media Works, which ran between the February 2008 and May 2011 issues. The project had been first announced in the two-hundredth issue of Dengeki G's Magazine released in the October 2007 issue, and the project itself is a form of commemoration for the achievement. Ohime-sama Navigation's premise is written by Satz, and the character design is by Naru Nanao, known for her artistry on D.C.: Da Capo by Circus and Ef: A Fairy Tale of the Two by Minori. A manga adaptation entitled Hime Navi was serialized between the June 2008 and June 2010 issues of Dengeki G's Magazine illustrated by Raina, and a second manga using the original title was serialized in the same magazine between the November 2008 and June 2010 issues illustrated by Yūki Takami.

Ohime-sama Navigation revolves around three young girls enrolled at a fortune-telling school named Kaisen Academy. Each is learning different forms of fortune-telling at the school, though they are in the same class and have the same homeroom teacher — Mai Komura.

Crystal Hoshikawa (星河 クリスタル, Hoshikawa Kurisutaru)

Crystal is a girl dressed like a witch. She was born on February 10, and has O type blood, making her a "Little Red Riding Hood"-type princess.

Hime Kaguyama (香久山 日冥, Kaguyama Hime)

Hime is a girl dressed like a miko. She was born on July 21, and has AB type blood, making her a "Princess Kaguya"-type princess.

Kari Nano (菜野 花里, Nano Kari)

Kari is a girl dressed in a Southeast Asia style. She was born on May 4 and has A type blood, making her a "Snow Queen"-type princess.

Mai Komura (米村 米, Komura Mai)

Mai is the homeroom teacher to Cystal, Hime, and Kari.

Ohime-sama Navigation is a reader-participation game that ran from the February 2008 to May 2011 issues of ASCII Media Works' bishōjo magazine Dengeki G's Magazine. Originally, the readers were given three heroines—Crystal Hoshikawa, Hime Kaguyama, and Kari Nano—and the readers were able to vote on their birth dates and blood types which would determine their "princess type" which corresponds to princess in fairy tales. The main part of the game is for the readers to give advice to the three heroines as they attend the fortune-telling school.

A manga adaptation entitled Hime Navi (ひめナビ, Hime Nabi) was serialized in ASCII Media Works' Dengeki G's Magazine between the June 2008 and June 2010 issues and is illustrated by Raina. Starting with chapter 14 released in the July 2009 issue, the title changed to Hime Navi Evolution (ひめナビevolution) and kept that title for the rest of the manga. The first volume of Hime Navi containing the first thirteen chapters was released on June 27, 2009 under ASCII Media Works' Dengeki Comics imprint. A second manga, entitled Ohime-sama Navigation, was serialized in the same magazine between the November 2008 and June 2010 issues and is illustrated by Yūki Takami. Three volumes of Ohime-sama Navigation were released between June 27, 2009 and August 27, 2010 under Dengeki Comics.

• Official website (in Japanese)