In this Mature-rated manga series by the creator of Cat in a Hot Girls' Dorm, journey to the fictional "Ero" period of Japanese history, where sexy ninja battles await! This adult action comedy takes place during a fictional time in Japan's history known as the Ero period, where the arts of love and war hold equal sway! A diverse cast of ninja warriors both male and female must outwit, outlast, and out-maneuver the competition, or else suffer the sexy consequences!.