Four grown demons (Enma, Yukihime, Kapaeru, and Grandpa Chapeauji) are part of a Yokai-Patrol searching for demons that have escaped from Hell into the human world. They form the group known as the Enma Detective Agency as a cover for their activities. 1. Demon Prince Enma 2. Satan Claus 3. Demon Express Delivery part 1 4. Demon Express Delivery part 2