Princess Princess

is a manga written and illustrated by Mikiyo Tsuda. It was serialized in Wings from August 2002 to April 2006. A sequel entitled Princess Princess + was also serialized in Wings from May 2006 to January 2007. An anime has been adapted from the manga and aired on April 5, 2006, produced by animation studio, Studio Deen. A live action adaptation called Princess Princess D aired from June 28, 2006 to September 13, 2006. A visual novel video game for the PlayStation 2 based on the series was released on October 26, 2006 in Japan.

Princess Princess
Why is Toru Kouno receiving such an overly warm welcome at his new all boy's school? He has yet to discover the secret system called "Hime (Princess)" in effect at the school. Boys who are chosen have to dress up as a girl in every school event! Little does Kouno know that he would be the chosen one.

Princess Princess +
The new school year is here! Fujimori Academy students Kiriya Matsuoka and Tomoe Izumi have been chosen as this year’s princesses, but it’s going to take a lot of hard work to bring them up to speed. Enter former princesses Kouno, Shihoudani and Yutaka for a bit of princess training! Although Matsuoka and Izumi seem willing and able to take over the job of dressing up as girls and cheering at school events, they’re not exactly what you’d call “friends.” In fact, they seem to be about as opposite as two people can get. This animosity spells trouble for a student body that depends on their princesses to give them a warm, glowy feeling all year long. Can President Sakamoto and the ex-princesses convince Matsuoka and Izumi to bond for the sake of the school? Or will it take more than a common experience to bring two very different people together?

Other Sources

 * Princess Princess (manga)
 * http://www.animenewsnetwork.com/encyclopedia/manga.php?id=6174
 * http://www.animenewsnetwork.com/encyclopedia/anime.php?id=6467