(Y/n) is a rogue ninja who lives alone in the forest. One day when she was walking home from a nearby village she saw some ninja harassing a group of kids. (Y/n) steps in and saves the kids only to find out that they are supposed to be the criminal organization, the Akatsuki. Somehow the group have been turned into five-year-olds and the only one who remembers his adult life is Pein. Can (Y/n) help Pein find a way to bring them back to their normal age as well as babysit the others who think they are still children?