“Dark Elementals”, which may simply be referred to as “elementals” along with other types of elementals, are demonic elementals that have had sex with their covenanters a countless number of times and stored up vast power within their body by taking in vast amounts of spirit energy. They are the highest rank beings among the elementals, and compared to demonic elementals, they have overwhelming power. Their abilities are ranked among the highest of all monsters including those other than elementals.
Dark elementals that have succumbed to demonic taint and been completely absorbed by swollen demonic energy have a monstrous nature that is stronger than their elemental nature, and their alluringly lewd beauty is polished. Part of their body is stained with darkness, and they have a lascivious and monster-like expression on their face that is full of love and pleasure.
When the elementals which are the embodiment of nature succumb to demonic taint, it's the same as the demonic corruption of all the natural world in the region around them. Dark elementals return elements that include vast amounts of their condensed demonic energy back to locations corresponding with the various elements of the natural world, changing nature itself into that of the demon realm. (Example: In the case that an undine became a dark elemental, the water would change into the water of the demon realm.)
If there is a single dark elemental, part of the natural world will begin changing into a demon realm. Water seeps into the earth, the earth cultivates crops, and people eat the crops. If a part of the natural world becomes a demon realm, then demonic energy will also flow into other parts and spread in that way. The people who live there will end up changing into monsters and incubi. And if the monsters increase, the monsters release demonic energy into the air that further accelerates the process of the conversion of nature into a demon realm, and eventually, everything is tainted by demonic energy and a rich demon realm will be completed. Even after becoming dark elementals, they still readily possess the elemental's peculiar ability to enrich nature, but dark elementals enrich the nature of the demon realm, rather than the human world.
Dark elementals possess an extremely powerful nature as monsters, they are far more lustful compared to demonic elementals, and their heads are filled with nothing but thoughts of having sweet sex with their covenanter for days. They experience the greatest joy when their body is overflowing with their covenanter's spirit energy and their heart, body, and the inside of their head are all stained in the color of their covenanter.
To that end, they will continue to have sex with their covenanter day after day, and wield the power to enrich nature that elementals possess to the fullest extent, and the demon realm will grow richer and more hedonistic. As far as elementals are concerned, they themselves are beings that are one in body and soul with nature. When they see the nature of the demon realm growing rich and becoming full of demonic energy, they tremble with great joy because they realize it means that their own body is also becoming full of the spirit energy of their covenanter. Also, after becoming a dark elemental, since changes occur that make them even more like monsters than elementals, their reproductive functioning is enhanced, and not only do they obtain spirit energy, it becomes possible for them to bear the offspring of a human man.
Big changes appear not only in them, but in the nature that's under the influence of the dark elementals. Before then, “nature” was an existence that was “impartial to everyone”. Whether it was a rock that dropped into a lake, or a human child unable to swim, they would both sink to the bottom of a lake equally. If a volcano erupted, lava would mercilessly swallow and incinerate towns and forests equally, and that's “nature”. However, when nature is under the rule of dark elementals, it becomes very “partial to humans and monsters” compared with before. With “nature partial to humans and monsters”, if a child that can't swim falls into a lake, an unnatural jet of water will occur and pull the child up to the shore. If a volcano erupts, then the lava will flow in a way that avoids towns and other such places where people and monsters live. It's not that the dark elementals are intentionally helping out. Unbeknownst to them, nature is doing it on its own. This is because of an effect that occurs when the elementals which embody nature itself become dark elementals, gain power, and become partial to humans and monsters. We can say it is proof of the enormity of dark elementals and their huge influence over nature.
As an example, I'll introduce an incident that actually happened. Even when a certain soldier of the radical faction of the order of the chief god dumped huge amounts of poison in the demon realm's water source, I heard that it was instantly purified by nature, and the incident ended without anything terrible happening. Furthermore, that soldier of the order was deliciously devoured by monsters near the water source.
Note from the Wandering Monster Scholar: This is an incident that occurred in the same land, but when a mischievous Imp of a certain demon realm pilfered an extra concentrated undiluted solution of aphrodisiac from Sabbath and dumped it in the water source, not only was it not purified, it was infused with demonic energy and the aphrodisiac compound was made even more potent and carried steadily downstream. I heard the entire demon realm ended up in a horrific state. From this incident, we can surmise that the basis of the judgment of nature which is partial to humans and monsters is actually decided based on the same kind of values as the embodiment of nature itself, the dark undine. Furthermore, a nearby village was deliciously devoured by the unfortunate unmarried monsters, and it became part of the demon realm.
Note from the Wandering Monster Scholar 2: Monsters have extremely tough bodies compared to humans, and they also have a high amount of vitality. After all, many of them have a different body composition to begin with. This story is cruel for the soldier of the order who sacrificed himself in a certain sense, but even if he had been successful, and the poison was carried downstream, poison that is potent enough to kill a human would have at most caused the entire demon realm to be swallowed in a vortex of stomach pain...
Dark Matter is also the author's race, but even though they were originally monsters and not elementals, they are sometimes classified as a type of dark elemental. Dark matters don't have “pure elemental” or “demonic elemental” forms, but there are several reasons why we can think of them as a kind of dark elemental, and they have a lot of points in common with elementals.
For one thing, dark matters are comprised only of pure demonic energy in the same way that elementals are comprised of masses of pure elements. According to this explanation, an element is a type of magical energy. We can say that demonic energy is “the demonic element” or “the element of darkness”, and thus a dark matter which is purely made up of those pure elements is an elemental of darkness. Another thing is that they possess the power to enrich nature. In the same way as elementals which can have sex with a man, store up power, and return the elements to enrich nature, a dark matter can also store up power by having sex with a man and return demonic energy to enrich the demon realm. And lastly, they can grant the power of the element they possess to a covenanter. To be frank, a covenant is the marital sex of a human and elemental couple, and frankly, a covenanter is also the beloved husband of an elemental. If we think about it like that, then we can say that it is a “covenant” when a dark matter assaults and has sex with a man. And a dark matter grants her own power to the man who became her beloved husband, or rather, “covenanter”. Men who become covenanters become able to freely manipulate the black object, a mass of demonic energy which is regarded as the element of darkness, which dark matters, including the author, ride on, as if it were a part of their own body.
In this way, since they have bodies that are comprised purely of energy, they have direct influence over nature, and they can lend their power to a man in a way similar to how an elemental would with a covenant, etc. dark matters are regarded as a type of dark elemental.
Also, this is based on my personal experience as a dark matter, but I have been able to somehow tell when something is happening in nature. For example, before a sudden gust blows, along with the sylph I employ, I myself have sensed the sudden gusts in advance. Also, as a water elemental can grasp the flow of water elements, I have become able to intuitively grasp the flow and amounts of demonic energy included in food and the natural environment. No matter what kind of illusionary spells or disguises they employ, my eyes cannot be deceived, and when a man has a monster bride, I can tell at a glance everything from the bride's race, down to even personally identifying her as an individual, knowing how many times she had sex the other day, and what kinds of demon realm food products were included in the meal she ate last night. I don't know if every dark matter is the same way, but I think this is because of a dark matter's peculiar power to govern the element of darkness (demonic energy), and I'm progressing my research in that direction.
(There are only an extremely tiny number of dark matter individuals, and unlike myself, most dark matters are only interested in their daily life and sex life with their husband, so it's extremely difficult to compare between individuals in this situation.)
Advertisement: Currently, I'm recruiting a human man to help me progress my research into dark matter. In order to make more progress in my research, and to see an actual example of what kind of changes happen to a dark matter upon obtaining a husband and how her abilities grow, and to lead a happy pleasurable life as a monster, I urgently need a husband. I still haven't tried it yet, but I can give birth to your children since dark matters are dark elementals, and I can also give birth to demon realms. In other words, a dark matter can make both children and demon realms, and raise them. We're a good race. Want to make a happy family and demon realm with me? If you're thinking, “definitely!”, then please drop by the demon realm state “Polove” immediately.