A forbidden escape suspense story!

Marimo and Rin are very young sisters. Who are the two continuing to fight and what are they escaping from? The answer to that secret lies in what happened several years earlier, originating with an explosion at a certain factory. A mysterious virus hit their district, and the two obtained strange powers: the power to wound or kill a person with just a touch, and the power to calm a person's heart by touching them.

Hand in hand, the sisters continue their escape in order to fulfill their promise to their mother, going towards a certain place, however...