D4 Princess

is a manga series written by Shotarou Harada. It was serialised in Dengeki Daioh and published under the Dengeki Comics imprint between 1998 and 2000.

Synopsis
Doris Ruridou is young princess who had just entered Teito Academy. She is also a Panzer, a person with special abilities and fights with a weapon called a "tool". Shortly after entering, her older sister shows up to teach her how to fight as a Panzer against other Panzers who challenge her.

Characters

 * Rurido Doris
 * Rurido Doria
 * Ginno Tsubasa
 * Aino Nozomi
 * Gaou Nejiru

Anime
The anime adaptation of the manga series was produced by Studio Daume and released in 1999.
 * see: D4 Princess (Anime)