2030, it was the year when the calamity that brought down the normal human civilization of earth began to occur.
Before the calamity occurred, everything was the way it is as usual. Civilization full of technologies, peace, kids playing around at the playgrounds, workers goes back and forth to their workplaces. But everything changed when a giant statue of a man with wings suddenly appeared out of thin air over the center of every continents on earth. On their embraces, were a big stone slab with completely clean surface. Strange enough, the statues should only be able to faced one direction and can only be seen by those near it, but everyone from different places and angles from the statues claim to see it facing straight to them no matter which direction they were and how far away they were from the statues. They can see them so clear like the statues were in front of their eyes. Confusion began to arouse among every human that see it.
Despite being confused, many took the chance to get pictures and videos of the statues and share them on their social medias. Whilst they were neglected by their technologies, the stone slabs were starting to emit blue lights, bright enough to cover a whole city. Next moment, the stone slabs cracked and crumbled away. Revealing massive gates under the clean stone cover. Just by looking at the gates, sent chills down most people's spines. The gates look like it were painted with blood, strange skulls were arranged at the sides, real blood dripping from under the gate and fell onto the area beneath them. From confusion and amazement, people began to panic. Some are getting goosebumps and bad vibes that made them to run away and even hide before anything befall them. Their survival instinct eventually saved them from the first calamity.
Not long after, rumbles echoing through the air as the gates were all opened at once. It was pitch black inside the gate for a moment before red colored swirls beginning to form inside. That was when the humanity met with their terrors.
A gigantic scaly hand as large as a mountain emerged from the swirls. Their fingers curling with terrifying force. People all over the world was shocked by the sight of the hands. Screaming began to fill the air as some people were running to save their own lives but there were some who were too stunned to move. They were petrified on the spot they were standing on as the hands descended toward the ground under the statues. The tips of the sharp nails scraped against the clouds, sending them in every direction, before slamming onto the ground with a force that sent shockwaves across the land as if a small nuclear explosion just occurred. Glasses shattered, buildings were thrown away, grounds were caved in, people nearby were all died in brutal ways possible. Some got their limbs ripped from their bodies, some were crushed to bits. The areas were totally annihilated.
For a moment, it stayed stuck on the ground without moving. Dust and debris in the air was covering the hands from sight, but it still couldn't hide it's gigantic size from people even from far away. Some moment had passed, the hands began to move again. It was slowly lifted to the air and pulled back into the swirl, gave human the feeling to be assured. But little did they know, that it will be their beginning of the true terror. As the hands were pulled back into the swirl, massive black birds began to came out of the swirl in an incredibly large group that covered the sky around it in black. At the same time, militaries of every country had already prepared themselves with artilleries, modern weapons, and technologies to go against any threat. As soon the birds got in range, they began to terminate every single one with airstrikes. All the birds died and dropped to the ground. After all the birds were killed, the statues that appeared over all the continents were suddenly turned to dust.
All of the human celebrate the success on eliminating the dangers. But many were also filled with sadness due to all the deaths that happened. Family members, friends, partners, were killed by the attacks.
But the dangers did not really stop there. Though no statues appeared over every continents anymore, the gates were still appearing but in random location all over the world. Many other kind of weird monsters came out of the gates. After many sacrifices due to the gates randomly appear and monsters came out of it, researchers finally decide to investigate inside the gates. Whenever gates appeared, it'll take them at least a week for monsters to come out. Therefore In that time, they send some soldiers and scientists into the dungeon to investigate what's inside. They found out behind the gates were another dimension. And it differs. Sometimes, it was inside a cave, sometimes was in a jungle, sometimes on a mountain. Sometimes snowy, sometimes hot as hell. Another important information they found out about the gate was that the monsters inside should be cleared in the remaining time before they were able to step out of the gate. Once the monsters were cleared, the gate will close and disappear after an hour. Monsters won't be able to step on the face of the earth. Government around the world were delightful to hear the news. they finally found a way to keep their country safe.
As time goes by, another strange thing happened. Random people began to claimed to be able to use magic just like in the fantasy stories. But the claims were different depends on people. Some said that they can fly, some can produce fire, some got super strength. It just so much claims that governments decided to confirm it themselves by meeting with those people. And the claims, turned out to be true. There are some people who was able to use magic. Government around the world took the chance to train and nurture those who could use magic so that they could use their ability to clear the gates. With the help of magic users, the gates clearing became more successful and much easier. Because of that, the magic users were called "Heroes".
But years goes by, more and more people awakened their magic ability. And not all of them are good. Some are evil enough to take advantage of their ability to attack other, robbing, and even doing malicious acts. So public decided to separate the title. People who awakened their magic ability were referred as 'Awakener'', while those who legally registered themselves, will be referred as "Legal Awakener" and able to enter and clear the gates. While those who didn't register themselves, will be referred as "Rogue Awakener" and will have penalty if they somehow got found out by the governments. Only those who are active on clearing gates and save others from monsters that came out are qualified with the "Hero" title. And the heroes, are usually the top of the awakeners, and qualified to own the gates aside from governments. Most countries also let their top heroes to join the parliaments in meetings about the safety of their country.
After so many gates been cleared out, the heroes decided that the term "Gates" was not suitable for it. So they changed the name with "Dungeons" instead due to the territory inside the gates. And in fantasy action novels tend to refer dungeons with monsters. So, it fits more than gates.
20 years had passed since then, more dungeons had appeared and been cleared. And more people awakened since then. To keep the awakeners activities organized, some veteran and high-ranking awakeners decided to create groups to recruit legal awakeners that keep expanding and eventually becoming so large that they changed it to "Guild". Guilds are groups where awakeners and non-awakeners can join to contribute on any dungeon-related activities. While most of awakeners will have to go into the dungeons to kill monsters, non-awakeners who joined guild will have to manage guild's data and search information about any dungeon occurrence. Aside from that, with so many differences in awakener's level, they decided to create ranks on awakeners. starting from the weakest, F, to the supposed to be the highest rank for the strongest, A. But there were some awakeners and heroes who just too powerful compared to the other A-ranks. Therefore, they created two new ranks, S, and for the strongest, U. With the total of eight ranks, the ability of distinguishing the level between awakeners became more easier.
The reason for distinguishing awakener's rank is because the dungeons were not only have one level of danger. It varies according to the color of the swirl inside the gate. Starting from red as the least danger for awakeners. Following with orange, yellow, green, aquamarine, blue, and the most dangerous, purple.
With everything have been organized and no monsters randomly attacking human on the streets, humanity peace had finally returned.