A hundred years ago, a scientific experiment tore open the "door" connecting different dimensions. Alien beasts poured in, energy pollution spread, and humans established a hunter system on the ruins. If the door is not broken for seven days, the door will be breached - monsters will flow into reality and the city will be in danger.
He is an E-class hunter, the weakest, crawling through the lowest doors day after day in order to survive.
Until that day, he accepted an ordinary D-level mission, but there was a "double dungeon" hidden inside the door. His teammates were killed, and he lived alone. At the moment of life and death——
[Ding. You are eligible. Become a "player"?
