Negima!: Magister Negi Magi, known in Japan as Magical Teacher Negima! (魔法 先生 ネギま!, Mahō Sensei Negima!?) is a manga and anime series by Ken Akamatsu (known for his best selling title Love Hina) that contains a large amount of fan service/ecchi scenes. The manga is currently being published by Kodansha and serialized in Shōnen Magazine in Japan. Del Rey Manga is publishing the English translated version in the United States and Canada. The series is licensed for English-language distribution in the United Kingdom by Tanoshimi.

The anime, produced by Xebec, aired in the first half of 2005 and is being released in the US by Funimation Entertainment. Additionally, two OVAs have been released, produced by Shaft and GANSIS, who had produced an alternate retelling of the series, Negima!?. Moreover, on March 29, 2008, a third set of OVAs called Mahō Sensei Negima!: Shiroki Tsubasa Ala Alba has been announced and will be bundled with Mahō Sensei Negima! volume 23, 24 and 25 and will span from chapter 176 to 183.

Source: Wikipedia