||Action, School Life, Sci-fi
The stage is a certain port city within the Kantou region. There resides Tandouji Aruma, who lives a lonely and solitary life. One day, he is approached by Aiba Ruri who asks for his help, for the power of the Sacred Seven which resides within Aruma. However, Aruma turns her away. In the past, Aruma had hurt people with that power. Since that moment, he had foresworn it.
But when the peaceful city is attacked by a monster, Aruma reluctantly decides to use the Sacred Seven. However, his powers go berserk and the situation becomes even more dire. At that moment, Ruri comes to his aid.