Meisuke Nueno (Ryuhei Maruyama) is the homeroom teacher of a 2nd grade 3 class in high school. He is referred to as Nube. He sometimes carries himself as an idiot, but he does care about his students a lot. He also has a hidden side. Meisuke Nueno has a demon's hand. He solves monstrous case and fights desperately to save students from monsters.
Dan is a first year high school student. He isn't so good with his studies or sports. He spends most of his free time at home. One day, his father's spirit enters Dan's body. His father originally died in an accident. It just so happen's his father is the type that excels at everything and now Dan possesses the same gift. He starts to play well in basketball and begins to date a popular girl at school. Dan also becomes popular among his classmates. His school life is just going amazingly well. Because of his change in personality, the other students are surprised by him, but they become influenced by his adult like point of view. Soon, his friends realize the secret of his change.
Teacher Akira Kamiyama tried to stop a bullying case and the bullying became his own trauma. Since then, Akira has decided to not get involved if its not absolutely necessary. He then begins teaching at a middle school and moves into a new apartment. Akira then discovers that his apartment also houses a ghost named Akane, who was a teacher before she died. Akira Kamiyama and Akane then solve problems which the middle school students have.