Sealed and forgotten below Tokyo, there is a world called Tokyo Underground. Bodyguard and element user Chelsea Rorec escapes the underground with the Maiden of Life, Ruri Sarasa. They take refuge in the home of Asagi Rumina but are soon attacked by members of the Company ordered to retrieve Ruri.

Sealed and forgotten below Tokyo, there is a world called Tokyo Underground. Bodyguard and element user Chelsea Rorec escapes the underground with the Maiden of Life, Ruri Sarasa. They take refuge in the home of Asagi Rumina but are soon attacked by members of the Company ordered to retrieve Ruri.