Nintama Rantarou: Ninjutsu Gakuen Nyuugaku Annai no Dan (Series)

People who wants to entroll into Ninjutsu Academy, gather now! Rantarou, Kirimaru, Shinbei and their friends present the glamor of Ninjutsu Academy as a commemoration of the 25th anniversary of the Nintama Rantarou TV anime. (Source: Nintama Rantarou Wiki)