Dungeons were the greatest threat to people, and vice versa, they were also the most beneficial beings.
Precious Ore can be mined in the Dungeon, or Demon Stones can be obtained by defeating the demons that appear.
Demon stones and ores had become a necessity for people, and large demon stones had high magic holdings and were traded at high prices.
The adventurers earned their living by attacking the dungeons, acquiring precious ore and demon stones, and wholesale them into guilds.
Naturally demons are strong, if you stay alert, you can get hurt, and if you don't have the strength, you can die.
But there was a life-threatening return in the dungeon.
Dungeons are currently distinguished by SS, S, A, B, C and difficulty, and the number of hierarchies made up increases as they become more difficult.
There are also differences in frequency of occurrence.
SS Dungeon.
SS grade dungeons specified for highest difficulty. Only five sets of Adventurer parties have been attacked so far.
It emerges once every few decades in proportions, with fifty hierarchies of composition.
S-grade dungeons.
If you are recognized as an S-Class Adventurer by the Alliance, you will be able to enter and leave any country freely by presenting the proof card that will be issued.
It was also proof that S-class dungeons appearing around the world were so dangerous that few adventurers could be attacked.
It emerges at a rate of one every ten years, with forty-five hierarchies of composition.
Class A dungeon.
A high-difficulty dungeon recognized as an advanced adventurer if you can attack it. How many pairs of Class A parties belong to dramatically changes the speaking power of each guild.
Appears at a rate of once a year, with a composition hierarchy of forty hierarchies.
Class B dungeon.
This is a dungeon that veteran adventurers belonging to the Alliance are after.
Fine objects occasionally appear in both the Ore and Demon Stone that can be acquired and in the Class B dungeons.
It emerges in a percentage every two or three months, with a composition hierarchy of thirty hierarchies.
At the end of the day is a C-grade dungeon.
A dungeon targeted by wild adventurers and rookies who are not organized.
Appears in a ratio of one to two times a month, with twenty hierarchies in the composition hierarchy.
There are some errors in the frequency of occurrence and in the composition hierarchy, but this was generally the case.
In addition, the form and breadth of the dungeon vary from hierarchy to hierarchy.
It can be a great labyrinth, a meadow, or a forest.
In short, the method of attack becomes completely different for each of its hierarchies.
For this reason, in the case of high-difficulty dungeons, advance preparation can also be key to the dungeon strategy.
If you defeat the Dungeon Master in the deepest room of the lowest level, then the Dungeon stops giving birth to demons and over the course of a few days begins a slight natural collapse.
And it will appear as a new dungeon in a different place.
Basic dungeons often appear in a 50-kilometer radius of a large city with a population of over 300,000.
Hypothetically, it has been said that during the breeding season, "soldering", demons attack humans, etc., but the reason for the clarity has not been clarified.
So there was always a guild headquarters in the big city, and there were also a number of guilds.
If you leave the dungeon unattended, there will continue to be a large number of demons in the dungeon for a month known as the breeding season Solder.
And the demons who can't reach the dungeons crawl out to the ground and attack the people.
So a dangerous dungeon is discovered and the country seals the entrance.
The sealing method was to work with large rocks and limestone soil to create solid, thick walls and keep demons out, day and night.
Only an adventurer party with permission at Alliance headquarters was able to get in and out by showing the plates to the soldiers stationed there.
If you seal the entrance and exit this way, you won't be afraid to let the demon out during the breeding season.
However, because sealing the dungeon would cost money and maintenance, the frequency and danger of occurrence were considered, and it consisted of grade A dungeons.
So if the frequency of occurrence is a grade B dungeon every few months, attack the dungeon a little before the breeding season and stop the activity.
Frequent C-dungeons are likely to produce new dungeons during the breeding season, even if attacked.
In that case, it is not possible to predict where the dungeon will be expressed, so the danger to people increases.
So I give up on demons crawling out, and the adventurers are protecting people from demons.
The breeding season escort job, which could not even dive into the dungeon for adventurers, was surprisingly good money and mutually beneficial.