Valkyrie who run around the sky. During the battle with the land of the dead, the youngest child, Grimgerde, disappears ... ... Grimgerde noticed that he was lying in the old castle of the shrine maiden. A ghost appears in front of the Grimgerde, and he says, Remember the lost past and fulfill your destiny. Grimgerde, who remembered his fate from the books sleeping in the old castle, was also awakening the lost past ... himself who was once killed by the Valkyrie and others ... Trained his sisters to collect the keys opened by the fall of Valkyrie to ascertain the truth to his father, God, from doubts about his sisters who believed in his companion. I was going ...