Otome wa Boku ni Koishiteru (処女はお姉さまに恋してる, Otome wa Boku ni Koishiteru? lit. The Maidens are Falling in Love with Elder Sister), commonly known as Otoboku (おとボク, Otoboku?), is a Japanese visual novel developed by Caramel Box and released on January 28, 2005 as a limited edition. The original version, first available on the PC, contains adult-only content of a sexual nature. Subsequent releases included a consumer port on the PlayStation 2 with the adult content removed and a version of the game which was a DVD playable on a PC and included full voice acting. The story centers around a feminine male high school student named Mizuho Miyanokouji, who transfers into an all-girls school due to his grandfather's will. A common theme throughout the series is the pseudo-lesbian relationships that Mizuho gets put into for being a very popular student at his new school.
Otome wa Boku ni Koishiteru has made several transitions to other media. Two separate novel series were created in 2005 followed by a manga illustrated by Kanao Araki. An anime was quickly adapted as well which first aired on October 8, 2006 in Japan and contained twelve episodes, with an extra episode included in the last DVD that went on sale on April 4, 2007. There have been four drama CDs released.
The original title uses the kanji 処女 (shōjo, 処女?), which can mean both "virgin" and "young lady". The creators added furigana subscript to indicate they wanted it read "otome" meaning young maiden. Additionally, furigana was added above お姉さま (Oneesama, お姉さま?) to indicate that they wanted it read "boku", in order to highlight the fact the main character was actually male. Despite the different kanji, the official reading is "Otome wa Boku ni Koishiteru", meaning "Maidens are Falling in Love with Me". When the game was ported to the PlayStation 2, it was renamed as 乙女はお姉さまに恋してる, which uses the actual "otome" (乙女, "otome"?) kanji. The latter name was kept for the manga and anime releases.