Spelling corrections and suggestions are welcome, especially those related to suspension of disbelief. My primary goal is to explore the real-world consequences and complications that were to arise from such a setup. If you feel that characters have taken choices that are not the best choice they could have made, that's fine. If you feel they have taken a choice that they would have not gotten to had they been rational, thinking beings – that's an error on my part, and rectified it must be. Heavily inspired by Maoyū Maō Yūsha.

It was bound to happen somehow. Human technology was evolving at such a rate that nothing else could have any hope of keeping up. Humanity's strength was always in numbers, and now, with the whole world interconnected, no society could stay secret for long.

Once mobile phones with built-in cameras became widespread, the end was nigh. Not a day went by without a media cover-up in every country, and eventually one of the dictators had had enough, and ordered a census of all supernatural abilities in his country. Since there were several different secret branches of the government working in parallel, the census began by putting all known faction representatives in one room, together with all third-party contacts that could be found.

As it turned out, one room was hardly enough.

The results of the meeting were staggering. Over a hundred major underground factions, dozens of different underground societies, all living a double life. Only one in every three people in the country was actually powerless, and only those who forcefully distanced themselves were not part of some organization. Almost the entire population of the country was living a double life as 'regular' humans, and for naught – after several thousand years of ability users and humans coexisting, natural selection had won out. The 'regular' humans had gone extinct decades ago, or had merged with existing factions.

This meeting became known as the Grand Reveal, and was a milestone for ability-users worldwide. It was immediately understood by all those who took part in the census that the consequences of the revelation of such powerful abilities could either lead to unrivalled prosperity or to civil war of unimaginable proportions. Within days, official diplomatic meeting between the heads of the various factions had taken place, plans for melding the various types of law enforcement units into a single cohesive structure were being furiously debated, the commercial plans of the country were completely halted and restarted based on the technological and non-technological advances from each of the factions – all at breakneck speed, with the constant threat of total factional war looming above everyone's heads. Scientific minds convened, university studies ground to a halt as students realized that everything they were learning would be out of date by the end of the week, the wiser ones among them cackling with glee as they typed out theses on teleportation-based urban planning, meldable heap structures in elemental magic and the unique genetic structure of dragon pearls. Warriors stood guard at their bases, tense with anticipation and fear of the unknown. Assassins invaded headquarters to steal relics of power, occasionally successfully, mostly never to return. Clans too short-sighted to see the big picture took advantage of the confusion and attacked, only to be annihilated by alliances formed solely to prevent full-scale war from erupting.

The news spread as fast as thumbs could type it. Virtually every country in the world underwent a metamorphosis, many taking inspiration from the original country in reorganizing their political and governmental structures. Within a few years, magic and internal energy classes were introduced to the school curriculums, technology and magic were complementing each other, and many mysteries previously thought unsolvable had been brought to light. However, under the surface, the inter-faction hatred still loomed. Political manoeuvring peaked in complexity, a few major figures died peacefully in their sleep from completely natural causes, and items which had been held in safekeeping for centuries kept mysteriously falling from the backs of lorries.

And many mysteries still remained unsolved. Many powers seemed to defy all logic, but one stood above all other in terms of head-scratchingly blatant disregard for all physical laws and common sense. Not only was it ridiculously overpowered, it appeared to be contagious – areas affected by the carrier continued to exhibit abnormal behaviour, and people connected to the carrier could utilize parts of the unique ability themselves.

After multiple kidnapping attempts, 24-hour surveillance and far too many people begging for apprenticeship, The Gamer, Han Jee-Han, created an entrance to a dungeon, entered it and has not been seen since.

Gang wars were fought over the entrance to the Dungeon, but seeing as so far as anyone can tell the dungeon appears to be endless, it was eventually declared a public space, and the security – at least around the entrance floors – is as high as it gets.

Even today, the Dungeon is the primary source of all magical artefacts and specimens across all dimensions, and legends have been cropping up of an orb of Power situated within it, and of various Runes that must be obtained to attempt to reach it.

However, one thing is certain – the progenitor of the dungeon, Han Jee-Han, is somewhere in there, presumably with a number of his friends, and within him the power to change the world – again – forever.