Mariko had a happy childhood. A complete family, good friends, and a normal life like other children. However, they all crumbled to ashes. A tragedy struck her village, causing her to lose everything. She knew that the tragedy was not an accident, but that someone had caused it on purpose. She promised that she would find the person responsible for the tragedy. However, her plans come to a halt when she is teleported to a game of death, where there will be many dangers lurking in the darkness, waiting for the right moment to take her life away. Can Mariko survive through the game? Or will she die?
19 parts