Bamboo Blade (バンブーブレード, Banbū Burēdo?) is a Japanese manga series written by Masahiro Totsuka, and illustrated by Aguri Igarashi. The manga was first serialized in the Japanese seinen manga magazine Young Gangan starting December 3, 2004. The manga has been licensed for distribution in North America by Yen Press. An anime adaptation by AIC A.S.T.A was broadcast in Japan between October 2, 2007 and April 2, 2008 on TV Tokyo. The series tells the story of a Toraji Ishida, a luckless high school Kendo instructor, who is challenged by his former upperclassman, also a kendo instructor, to a competition between their female students. The bet inspires Toraji to gather and train a team of five girls. Fortuitously, at this time he meets Tamaki Kawazoe, a gifted young female kendo practitioner.

Source: Wikipedia