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. (Source: Anime News Network)
Genres: Action, Comedy, Mecha, Sci-Fi
Watch D4 Princess episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.