One day, you find a mysterious black book at an antique book store on the way home from work. Since then, scary accidents occur one after another around you… Then, when you are attacked by a strange man, 4 handsome guys appear in front of you! They say that they are devils and you need to sign a contract with one of the devils if you want to be protected from an evil “Angel”, who is running after you. Who will you choose?

One day, you find a mysterious black book at an antique book store on the way home from work. Since then, scary accidents occur one after another around you… Then, when you are attacked by a strange man, 4 handsome guys appear in front of you! They say that they are devils and you need to sign a contract with one of the devils if you want to be protected from an evil “Angel”, who is running after you. Who will you choose?