Music and drama CDs

On December 29, 2010, a vocal CD containing four different variations of the opening theme for Imouto Paradise! was released, including the full version of the song, which is three minutes and forty nine seconds long. There was also a karaoke version, which was the same length as the full version, an arranged version, with a length of one minute and fifty three seconds long, and lastly, a guitar arranged version, one minute and twenty seven seconds long. The disc length in entirety is ten minutes and fifty eight seconds long. The vocal CD was released at Comic Market 79. An Imouto Paradise! 2 theme song CD has also been produced by Moonstone Cherry, containing the game's opening theme and ending theme.

Two adult drama CDs entitled Oyasumi Mae ni Imōto ni Nuite Morau (おやすみ前に妹にヌいてもらう? ) were produced by Sofmap, and adapted from the first game, Imouto Paradise! The first drama CD was produced containing Aya and Rio's stories on August 12, 2011, and the second drama CD was produced on December 16, 2011, containing Hiyori, Koharu and Michika's stories. A bonus Imouto Paradise! 2 drama CD came bundled with the Imouto Paradise! 2 Onii-chan to Go nin no Imouto no Motto! Ecchi Shimakuri na Mainichi game, which was released on May 31, 2013. Five drama CDs, each focusing on a different sister of Imouto Paradise! 2, were released separately by Sofmap.

Imouto Paradise! Themes
===Imouto Paradise! 2 Themes[ edit] === 
 * Opening Theme
 * "Younger Sister Paradise!" (妹ぱらだいす! Imōto Paradaisu!? )
 * Performed by: Miruku
 * Lyrics by: Miruku
 * Composition and arrangement by: Aoshima Shūzō
 * Ending Theme
 * "Lovely Candy" (ラブリー キャンディ Raburī Kyandī? )
 * Performed by: Nagasaki
 * Lyrics by: Nagasaki
 * Composition by: Fine Chemical
 * Arrangement by: Fine Chemical
 * Opening Theme
 * "Even More ☆ Paradise!" (ももっと☆ぱらだいす! Mo Motto ☆ Paradaisu!? )
 * Performed by: Miruku
 * Lyrics by: Miruku
 * Composition and arrangement by: Aoshima Shūzō
 * Ending Theme
 * "Thinking All the Time" (いつも思うと Itsumo Omō to? )
 * Performed by: Miruku
 * Lyrics by: Miruku
 * Composition and arrangement by: Aoshima Shūzō