Player To GameMaster

On **January 15, 2015**, humanity faced a new and terrifying crisis—**Cracks**, mysterious rifts that connected Earth to dungeons filled with deadly monsters. Unlike any disaster before, this phenomenon challenged not only survival but the very structure of society. These Cracks weren’t permanent at first; they could be entered and closed. However, if left untouched for up to **one week**, they evolved into **Gates**, allowing monsters to spill into the world.



The appearance of Cracks forced humanity to adapt quickly. People began awakening supernatural abilities, and society reorganized itself into **combat classes**, ranked from **F to A**, with elite tiers labeled **S, SS, and SSS**. The first three known Cracks were actually Gates that had gone unchecked—leading to mass destruction and the beginning of a new world order.



In this chaotic new reality, power determined status. Those who could enter Cracks and fight monsters became humanity’s front line and elite. The rest were left to watch, wait, or die.