They forget sometimes, that we are alike. We are all made from the same things, we are angels all the same, even if we have fallen. You have always been told there is no edge to the earth. But thousands of years ago, there once existed an edge. An entrance to the realm below the earth, the underbelly of the world. There lived the evil cursed down from the heaven's eons ago, and their offspring since. The entrance is a little-known place, in a woods you've never heard of, in a town that no longer exists. It lives at the turning point from up above to down below. And one day, a little girl finds it. Mari finds the entrance, and her life is turned upside down. There, her and her brother come to know two of the evil's offspring, Ciel and Basil. The four grow up together, soon becoming an inseparable pack. But when things begin to go awry, they realize more may be interfering than just nature. With gods toying with their lives, the four must decide between their friendship and love, or the world.