They are the students of Shinigami Technical School. Each one has a different weapon companion. All students and weapons attend class and are given homework to do. Homework mainly consists of getting a certain soul or maintaining peace in the world. Each meister tries their best to help their weapon reach death scythe status so they can be used by Shinigami-sama. The meisters have a rating system that goes from one to three stars which usually measures soul energy. It is important that the meister and weapon can tune their soul frequency to perform high level attacks and bring out the weapons full power.