Koi Kana

 is the first opening theme song to the Japanese anime "Kirarin Revolution". The song was released on July 12, 2006 and is performed by Koharu Kusumi from Morning Musume, credited as .
Background and release.
"Koi Kana" is the first opening theme song from "Kirarin Revolution" and is performed by Koharu Kusumi from Morning Musume, who voices the main character, Kirari Tsukishima. The song was released as the character's debut single and Kusumi is credited as .
The single was released on July 12, 2006 under the Zetima label. "Sugao-flavor", the first ending theme song to "Kirarin Revolution", was included as a B-side and is also performed by Kusumi under her character's name. The limited edition featured an alternate cover and came with a large sticker as its first press bonus.
A video single was released on August 7, 2006.
Music video.
The music video features Kusumi dressed up as her character, Kirari Tsukishima, and dancing in a room full of stars. A version featuring footage used for "Kirarin Revolution"'s opening and the choreography were released with the video single.
Reception.
The CD single debuted at #12 in the Oricon Weekly Singles Chart. The single sold 18,125 copies on its first week and 38,650 copies in total. The video single charted at #30 on the Oricon Weekly DVD Charts.
Cover version.
A Finnish-language cover version of the song, "Se tunne", by Finnish singer Laura Vanamo, was released on March 25, 2009, by .