This manga is about Ami Nakamura, a normal 15 years old girl with a normal life, nothing exciting happens and thats the way she likes it, but what she dos'nt know is that she has been chosen to be a Messenger, a human gifted with the power to defend the world from anything ghost demon or creepy gooey thing that crawls out from the dark realm and to go along with this she gets two 'guardians' one a little angel and one a little demon (literally)But instead of actually helpingthey're making her little problem even worse!!!!