An hour after the competition started, various forces started to meet and the fights occurred all over the city. Around this time, a new change was brought in the middle of the city.
This was originally an open plaza with nothing but pebbles, but it was now the most infected part of the city. The smell of sulfur filled the air, obsidian shards littered the ground, and piles of bodies could be seen everywhere.
In the middle of the plaza, there was a large door about more than ten meters high and four meters wide. One side of the door was shrouded in a black mist. Around the door were five different-colored magic circles arranged in a pentagon. The magic circles were drawn in patterns that were impossible to decipher, and all the five circles were currently dim.
Suddenly, there was a crack. The little light that remained on the magic circles disappeared, and they shattered. The door opened…