Chapter 330 - time skip 

5 months later,

Central City, Desert Dungeon, 3rd floor, Boss room,

Right now, inside of the Boss room you can see many Warriors fighting with that boss and his subordinates. But even with that they were unable to get the upper hand against that Boss. This boss was a black scorpion and also compared to those other black scorpions this black scorpion was different because it was 10 meters tall and its tail was red in color. The Boss releases a flame poison that could instantly burn anything. 

All those 20 warriors were peak D-grade but they were still unable to land any attack on the boss. On the other hand the boss already injured 8 of those Warriors, fortunately their armor was able to protect them from that fire poison. But the poison was so dangerous that their armor turned into Ash after getting contact with that flame poison. With that you can guess how dangerous that poison was.