Aerism

Religion of Ærism
Ærism is focused on the great leaf, on which our world (realm: Kylorne) is on. The realm we are located in is in a raindrop, and all the stars around us we see from our realm are other leaves with realms. It´s also the national Religion of Østerion and maybe even other nations.

The Named Raindrops/Realms On Our Leaf World Are
(Kylorne/Overworld) - Rægnor | Kylorne / Kjilørne

(The Nether) - Ganteriøs

(The End) - Elyønis

Creatures

Dæveryx - Enderman

[Insert Demon Lord Name] - Ender Dragon/Demon lord

World Creation
At first, there was rain and darkness. Endless rain. At that time, the raindrops were not able to produce worlds nor life, they were just empty spheres.

Afterlife
An old legend goes that there was once a powerful User, known across the realms as the Ancient. They were named this way as it was believed that they had resided in their realm for as long as it had existed. The Ancient had devoted their life to developing methods of controlling time; they had learned to pause aging, but had also progressed much further.

According to the legend, the Ancient had discovered a method of attracting spirits of the dead (which were regarded at the time, religious or not, as factually real) to their realm. After luring many spirits to experiment on, the Ancient soon found their realm overrun by them. In desperation, the Ancient attempted to find a way to stop all the spirits at once, and mistakenly discovered something far, far worse than the spirits.

In a last-ditch attempt, the Ancient had gathered all the realm’s Energy and tried one last time to banish the spirits. Instead, the Ancient would freeze the entire realm in time, including themselves and all of its inhabitants. The spirits, however, remained unaffected, and would continue to be attracted to the realm and roam there. The inhabitants would soon all die off, frozen in place, while the Ancient would continue to stand in their spot, frozen for eternity.

It is commonly accepted that the Ancient’s realm was frozen somewhere in late spring, just before midday. Whilst the legend regarding the Ancient is held with some controversy, followers of Aerism generally accept the existence of the frozen realm, and that their spirits will, too, wander there after death.

Spirits cannot interact with the mortal world, nor are they mentally capable of doing so; they wander, and cannot make sound, although can communicate with each other limitedly through gestures. It is thought that spirits and living beings could once view each other, perhaps during the Ancient’s time. It is not known how the Ancient drew the spirits to their realm. Some theories suggest that the spirits had naturally been drawn there as it was the original home to all life, whilst others suggest that spirits are drawn to the dead, and that the Ancient’s realm had suffered famines for years on end, killing off a large portion of the population.

Legend of Elyønis
Elyønis is mentioned in Ærist histories as the land of the void. Described as a desolate chain of islands inhabited by a strange species which look like tall, dark and distorted versions of the Human races in Kylorne.

The realm is controlled by the Demon Lord [demon lord name] which takes the appearance of a gigantic dragon. After conquering his own realm, the Demon Lord turned to the other worlds and started a devastating war. He built a system of portals to travel to nearby raindrops by harnessing the power of the World Core(more lore of this is elsewhere). Every world has its own core, which is buried deep underground but since Elyønis is made of islands and void, the Demon Lord could reform the core into a flying crystal of energy named the [end crystal name] which he placed upon a gigantic tower made of the hardest stone known to man. With the first [end crystal name] he could activate a portal leading to other worlds. His first destination was Ganteriøs. A world once like ours, but corrupted because of the [Demon Lord Name] who stole the world core. Now it is a hellscape with lava seas and terrifying monsters. The Demon lord took world after world but when arriving at Elyønis he was met with resistance. [Demon Lord Name] managed to steal the world core but the ancient people living in the world fought him and pushed him out of Elyønis. Because the world didn't have a core anymore, it began to corrupt itself. Monsters got created and at some points in the world the same materials which can be found in Ganteriøs began to appear which you can still find today.

Because of this, our ancestors gathered the strongest fighters and mages to attack the Demon Lord's home world. They went through the portal to Elyønis which [demon lord name] created. They found themselves on a platform of the mysterious black stone of which the towers are made. The brave travelers quickly built themselves to the main island where they found 9 towers with one [end crystal name] on each one of those. The fighters slay the Demon lord and return the crystals to their worlds. As the [Demon lord name] fell dead to the ground, the Dragon´s body disappeared and in his place thousands and thousands of large black figures appeared which would later be named Dæveryx.

After returning the world cores, the worlds started to regenerate and Ganteriøs now has forests, and wildlife. Because of the removal of the cores, the portals broke down and travel between worlds is almost impossible again.

But the core of Elyønis was missing…

The Beginning
In our World called Aeris, there were several existing realms, in peace and beauty. Each one of them were unique in their own ways, but they all had a core, a powerful magical object with almost unlimited energy, using this energy to keep the world together from falling apart. Those cores were either protected by civilisations or hidden deep inside the realm. If a civilization found the core of their realm, they were able to use it for powering machines and weapons, or for portals. Those portals could be used to travel between realms, as they are all connected together through the leaf they are on.

The Collecting
The Demon Lord of the realm Elyønis (The End) came up with an idea to infiltrate other realms and steal their cores in order to get more power and energy. With his army of servants, called the Dæveryx (Enderman), he was able to travel to several realms and fight the civilisations to obtain the core. Every time a realm loses its core, the realm won’t be able to keep the land stable and it will fall apart, everything will be destroyed and the place you know will remain uninhabitable, since it will disappear.

In total the Demon Lord collected 10 cores of realms, leaving them in their inevitable fate of disappearance. (Two of those were the realm of Elviria and the realm of the nation Osterion)

As he worked on a project using those cores, he converted them temporarily into crystals, using them to heal and make the Demon Lord himself more powerful. He placed them on 10 massive obsidian pillars, surrounding his nest.

Existing Realms
Most of the realms were eradicated of their existence, some of them the Demon Lord couldn’t conquer, or didn’t take the risk of trying. There are 3 realms who survived the purge:

Kylorne
The realm of Kylorne or Rægnor, also called the Overworld by its civilisations. It's the oldest realm in existance of Aeris, and because of this, its bedrock layer deep down grew over its core, making it unreachable for the Demon Lord but also for the civilisations. So no one could use its power and energy.

The realm is full of colors and life, since it is also the most populated realm in Aeris. There are several biomes in which each of them have unique characteristics and features.

There are a bunch of civilisations forming nations and towns together. Diplomacy, economy, technology, and much more is a by human-formed rules they all follow to be human themselves.

Ganteriøs
The name of the second realm is Ganteriøs, which also goes by the name of the Nether. Stories tell that the Nether didn’t have a core long time ago and this ledd the realm to become unstable. The creatures of the nether though united together, leaving all their past differences behind, to bring back its core. Though it took them long enough, it was enough to keep the realm alive. In time without the core, the Nether became unstable; it almost folded itself, leading the Nether to get a ceiling. The heat got higher and higher, burning all the grass and dirt away, turning stone into strange bloody rock, converting the water into lava.

Though this happened long ago, and there are signs of regeneration of the realm. Forests and vegetation start to appear.

Unkown
Very little is known about this realm. Tales speak about a world of paradise, untouched from any danger and terror. Others speak of a horrible world of slavery, death and fire. A literal hell, with a worse fate than Ganterios. Until now, no one has ever really reached this realm, and truly proved it. It is almost impossible to track it down, as people tell of a strong force field surrounding the estimated location of the unknown realm.

Elyønis
This realm is home of the powerful Demon Lord. Its world is something really standing out from others realms. Most of the land is made out of void, and flying islands with almost no vegetation characterize Elyønis. There are no real existing civilisations, as the inhuman inhabitants only create flying cities and ships. Those are known to hold great valuables and treasures.

World Cores
The Demon Lord [insert name] was aware, during The Collecting, that he would be able to use the World Cores to generate Energy, a mystical force linked with thermodynamics and what was once known as magic. Learning to control it is a difficult skill, though it comes to some more naturally than others. Those who can control it are known as Users, and once were common amongst all the realms, barring Elyønis, where the Demon Lord prohibited the Dæveryx from using it.

Energy is generated from somewhere within a World Core, though it is impossible to break one apart to find out how. The more important fact to note is how the Energy from a World Core keeps a realm stable. Energy is drawn towards any form of life; the more complex the organism, the more strongly it attracts Energy. Settlements will have a stronger manifestation of Energy than a forest. The presence of Energy also produces a small amount of heat, and the general Energy in the world allows for habitable climates to emerge.

Once the Demon Lord began The Collecting, the worlds he had stolen from were left without a source of Energy. Not knowing this, the Users of these realms slowly depleted their realms Energy, creating a colder and colder climate before ultimately making the realm uninhabitable.

This had not been the first time realms had suffered a diminishing of Energy, although this was by far the largest by scale across Æris. Greedy Users had often caused problems for some settlements in certain worlds, although they were usually stopped before situations got out of hand.

Four realms survived being decimated by the Demon Lord, each with reason. The realm of Rægnor (more commonly known as the Overworld) was spared due to the Demon Lord deeming its core to be too slow in production of Energy. It was indeed slow in comparison to other realms, but remained stable due to the lack of Users.

Ganteriøs survived due to it not having a World Core; its inhabitants had suffered under its instability before banding together to create their own, artificial World Core. For a few years, their world gained a level of stability it had never seen, before the artificial World Core malfunctioned and produced Energy at a colossal rate, burning everything in the world. The extreme heat caused the blood from those who had died and the stone of the world to merge into a strange new blooded-rock. Some species survived, adapting to the heat, and attempting to rebuild the realm as it slowly stabilizes itself.

Elyønis was the home realm of the Demon Lord. At its center is her nest, which is surrounded by ten obsidian pillars. On these pillars lay the stolen World Cores, which the Demon Lord uses to heal herself with the immense amount of Energy released from them. Surrounding her nest is an infinite void, littered with islands, vast and small. Whilst some realms attempted to colonize the outer islands of Elyønis, they were largely unsuccessful, leaving only some small city buildings and floating ships scattered across the realm.

The final realm is unknown. (This part is shorter as I want it to have its own lore to it)

The Energy produced by a World Core can only be used in the realm in which that World Core lies; the immense store of Energy in Ganteriøs cannot be taken to another realm. The World Cores cannot be moved, and most are inaccessible due to the cores protecting themselves through natural means.

The Legend of Elyønis mentions that the realms had regained their World Cores, although this is unknowable due to the people of the realms having buried the knowledge of traveling realms away, to prevent another being such as the Demon Lord from rising again. Ruined portals across Rægnor were rebuilt, allowing the people there to travel to Ganteriøs, although the people of the Overworld are not aware of how the portals truly work. The portals are also unstable, and are prone to switch off at random.

The Dæveryx managed to retain the knowledge of traveling worlds, and can be found roaming across all of them, though they are mindless and incapable of speech. They pick up materials and drop them at random, teleporting across lands and realms. The only interactions they show are when a sentient being looks at its face; Dæveryx will create screeching noises and begin attacking with great force. Once slain, their eyes can be used to teleport short distances.

Each realm once had its own unique symbol to it, in a distant time whe trade occurred between them all. Rægnor was once renowned for its advanced Users, who discovered how Energy could be used for more than just heating and cooling, and accidentally gave rise to evil like that of the Demon Lord through their discoveries.

The Restoring of Stability
The World Cores have very little modern writing on them, as the prowess of Users has decreased, largely due to the older civilizations burying knowledge of Energy away to prevent another event such as The Collecting from occurring. However, some records of them still exist.

World Cores vary in size, shape and outer texture, although are all around 3m cubed in size. Their other features tend to be based off of nothing in particular, although some realms hold cores that reflect some part of the realm. One common link in their description is of crystals; World Cores are depicted in shapes that resemble different crystals, which are found in most realms. In fact, the Demon Lord had even named his stolen cores as [insert conlang translation], or “End Crystals”.

The stolen cores had been retrieved by ten Users, each from the respective home-realm of a core. After returning the cores, the User would compile together a book of their journey, known as ‘The Restoring of Stability’. Whilst the original word of the text has been lost to time, extracts from it are referenced throughout many other books. Most commonly cited is the period where the Users were, using Energy, carrying the World Cores for the first time.

They describe their awe as they sense the Energy being released in waves, and the different sounds each World Core made: a soft hum, the ticking of clockwork, water dripping and more. One of the cores appeared to have a wooden texture, whilst another appeared to be coated in marble. However, they did not believe that the World Cores were truly made of these materials; it was known that the Demon Lord had attempted to break open some of the cores to learn how they worked, and had been unsuccessful. The Users noted that there were no visible signs of damage, either.

They theorized that the World Cores’ physical appearance was simply an illusion, and that what they had viewed was simply the mind’s way of trying to comprehend something that was incomprehensible. They wrote that the ripples of Energy released varied too. World Cores produced Energy at different speeds and strengths, although enough to overwhelm the senses at close range.

The World Cores also noticed when they were in their home realm; one let off a blinding light, others became unnoticeable barring the release of Energy, and some created a thin wall of stilled air around them. These were said to be defensive measures, and there were many unique protections, one of the most famous being the bedrock wall between the World Core of the Overworld, which even the Demon Lord had failed to penetrate, later claiming that it had been a slow World Core.