The story of Ninja to Koroshiya no Futarigurashi follows Satoko Kusagakure, a naive ninja who escapes from her village and is saved by a passing high school girl, Konoha, when she collapses in the city. Satoko's pursuers close in, but much to their and Satoko's surprise, Konoha holds her own against them — since her true identity is that of an assassin. The start of an unpredictable life together between ninja x assassin. (Source: Crunchyroll News, Dengeki Daioh G, edited and translated)