The game was played on Japanese cell phone network NTT DoCoMo. The goal of the game was to form romantic relationships and hear love songs. Speech recognition software was employed to allow the player to directly converse with the characters. The player made story choices, spoke with characters, and heard characters conversing with each other. Different images were displayed on the player's phone depending on conversation choices and clothing selections. The game offered multiple endings depending on player decisions throughout the game.
In the anime, the main character is Yuta rather than his sister. For that reason, the anime has more of a homosexual element than the game.
The anime uses two pieces of theme music. "Hanashitaku wa nai" by Flame is the series' opening theme, while "LOOK UP DAYS" by Michihiro Kuroda is the series' ending theme.
Victor Entertainment released seven DVDs for the anime, each containing two episodes of the anime. The first DVD was released on January 25, 2007.1 The second DVD was released on February 21, 2007.2 The third DVD was released on March 21, 2007.3 The fourth DVD was released on April 25, 2007.4 The fifth DVD was released on May 23, 2007.5 The sixth DVD was released on June 21, 2007.6 The final DVD was released on July 19, 2007.7 Crunchyroll licensed the series.8
Serendipity released three game music CDs. The first two CDs, Marginal Prince Songs 1 and Marginal Prince Songs 2, were both released on September 1, 2005. Both CDs were sung by Shun Someya, Ryotaro Okiayu and Hisayoshi Suganuma.910 The final CD, Marginal Prince Songs 2.1 -Stanislav Sokurov-, was released on January 22, 2006.11
Serendipity released a drama CD, called Yuta Gakuin Tochaku Hen, for the anime on September 15, 2006.12
"Marginal Prince - Gekkeiju no Oji Tachi Vol.1 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-1 ↩
"Marginal Prince - Gekkeiju no Oji Tachi Vol.2 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-2 ↩
"Marginal Prince - Gekkeiju no Oji Tachi Vol.3 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-3 ↩
"Marginal Prince - Gekkeiju no Oji Tachi Vol.4 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-4 ↩
"Marginal Prince - Gekkeiju no Oji Tachi Vol.5 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-5 ↩
"Marginal Prince - Gekkeiju no Oji Tachi Vol.6 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-6 ↩
"Marginal Prince - Gekkeiju no Oji Tachi Vol.7 [Regular Edition]". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=VUBB-7 ↩
Cayanan, Joanna; Pineda, Rafael Antonio (February 23, 2024). "Crunchyroll Streams Marginal Prince, Gunma-chan Season 2 Anime". Anime News Network. Retrieved February 24, 2024. https://www.animenewsnetwork.com/news/2024-02-23/crunchyroll-streams-marginal-prince-gunma-chan-season-2-anime/.207876 ↩
"Marginal Prince Songs 1". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=PD-1044 ↩
"Marginal Prince Songs 2". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=PD-1045 ↩
"Marginal Prince Songs 2.1 -Stanislav Sokurov-". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=PD-1097 ↩
"Marginal Prince DramaCD Yuta Gakuin Tochaku Hen". cdjapan.co.jp. Retrieved 2009-03-06. http://www.cdjapan.co.jp/detailview.html?KEY=PD-1048 ↩