Demon Physiology (Mairimashita! Iruma-kun)

== Summary ==
Demons are beings that live in the Demon World, also known as the Netherworld, a separate world from the human world. Demons are creatures born from desire that only really care about their ambition and purpose, generally almost completely lacking empathy, only caring about themselves when it actually matters, and with an inherently violent view of the world that makes even things like torture techniques a common knowledge among even the most gentle of demons. Due to how extreme and merciless the ecosystem of the Netherworld is, for evolution purposes, demons needed to become powerful creatures with high specs and a series of special characteristics unique to each clan and individual. Demons can be of many different forms and species, ranging from individuals with mostly humanoid figures to anthropomorphized creatures, however, they all share a series of traits and abilities on top of their human-like intelligence.
== Ranks==
Demons are classified in a system of ranks where the higher the rank, the stronger a demon becomes and the more influence they possess among demons. The ranks of demons are the following:
#Aleph
#Bet
#Gimmel
#Daleth
#Hé
#Vav
#Zayin
#Chet
#Tet
#Yodh
==Low-Rank Demons==
===Abilities:===
* Superhuman Physical Characteristics (The live forms in the netherworld have high specsMairimashita! Iruma-kun Volume 8; Chapter 63 compared to the beings in the human world, something brought from the difference in danger between their ecosystem)
*Magic and Energy Manipulation (Demons are able to use magicMairimashita! Iruma-kun Season 1; Episode 1 and manipulate magical energy. All demons possess a bloodline magic that gives them an innateMairimashita! Iruma-kun Volume 1; Chapter 3 special abilityMairimashita! Iruma-kun Volume 1; Chapter 7, this bloodline magic normally defines the fighting style of demons, although there are many cases where Demons don't depend too much on their bloodline magic. The effects of magic change depending on its targetsMairimashita! Iruma-kun Volume 6; Chapter 51, so it's always needed to consider the affinity against the opponent. While there is magic that can be used just with knowledge, regardlessMairimashita! Iruma-kun Volume 36; Chapter 318 of mana capacity, the strength of spells depends not only on the ability and power of the user but also on the amount of mana used in a spell. Magic can be generally divided into three typesMairimashita! Iruma-kun Volume 8; Chapter 65:
**Verbal Magic: Magic that can be used simply by chanting and using one imagination to manifest the spell. The power of Verbal Magic doesn't depend on the ability of the user and instead is based purely on the amount of mana used, which makes it very inefficient and limited in potential. Due to how it's only needed to know the chant of a spell and have some imagination, this is the easiest form of magic that every demon can use.
**Non-Verbal Magic: A form of magic that can be used without the need of a chant, however, to be able to use this type of magic is needed a certain level of mastery and lots of training with the spell, but that could grow much stronger the more one mastered it. Due to how hard it is to acquire, few are the demons able to use a single spell without chanting. Although very useful, there is a certain restriction to it, which is that both Verbal Magic and Non-Verbal Magic can't be used simultaneously, this is a law of magic called the Ouroboros Law.
** Bloodline Magic: The most rare type of magic, which is unique to each demon and their family bloodline. The effects of bloodline magic are highly diverse and they vary from demon to demon. As this type of magic is directly related to the user's existence, it can grow to be much stronger if the user trains to develop it.
*Subjective Reality (Magic is a power that turn imagination into realityMairimashita! Iruma-kun Volume 6; Chapter 44 and its source lies in "desire")
*Enhanced Senses and Extrasensory Perception (Demons are able to smell human scentMairimashita! Iruma-kun Volume 1; Chapter 1. They can also feel staresMakai no Shuyaku wa Wareware da! Volume 2; Chapter 12)
*Non-Physical Interaction (Demons are able to physically interactMairimashita! Iruma-kun Volume 25; Chapter 218 with beings purely made of energyMairimashita! Iruma-kun Volume 25; Chapter 219, or with creatures like the Gaap's who are beings made of chaosMairimashita! Iruma-kun Volume 31; Chapter 273)
*Summoning (Demons can summon familiarsMairimashita! Iruma-kun Volume 1; Chapter 2 which are bound by strong blood contractsMairimashita! Iruma-kun Volume 3; Chapter 22. The familiars appearance and traitsMairimashita! Iruma-kun Volume 24; Chapter 210 are defined by the summoner, so they are a natural match for each demon)
*Bodily Weaponry (All demons possess wingsMairimashita! Iruma-kun Volume 1; Chapter 5 to fly even if they don't show them normally, fangs to eat humans, and typically most demons also have a demon tail and hornsMairimashita! Iruma-kun Season 1; Episode 6, though in the case of most human-looking demons, it's also relatively common for them to not have either a tail or horns. These traits are things demons acquired by evolution to survive their dangerous ecosystem)
*Flight (All demons possess wings that they use to fly, though normally they aren't shown until they spread them. Demons naturally evolved to gain wings so they at least could escape danger)
*Healing (Demons heal with human bloodMairimashita! Iruma-kun Volume 1; Chapter 6)
*Aura (Demons can releaseMairimashita! Iruma-kun Volume 3; Chapter 18 an auraMairimashita! Iruma-kun Season 1; Episode 11 from their body. Depending on the strength of a demon, their mere aura emit a pressure so strongMairimashita! Iruma-kun Volume 5; Chapter 38 that paralyze others, break thingsMairimashita! Iruma-kun Volume 25; Chapter 222 and prevent people from looking at themMairimashita! Iruma-kun Volume 27; Chapter 232)
*Plant Manipulation (Through the use of the basic spell taught in school, Quan Quan, a demon can grow a plant and turn it into a very exotic speciesMairimashita! Iruma-kun Volume 2; Chapter 9Mairimashita! Iruma-kun Season 1; Episode 6 that depend on their imagination and personal traits, and there are several more spells able to control plants)
*Transformation (All Demons go through something called Evil Cycle, or Wicked Phase, which consists of the physical manifestation of all their accumulated stress that unleash the inherently violent natureMairimashita! Iruma-kun Volume 5; Chapter 40 of demons. An Evil Cycle doesn't only cause a change in the behavior of a demon but also increase their abilities beyond their normal stateMairimashita! Iruma-kun Volume 13; Chapter 115 but at the cost of their clear thinking, which is the reason why demons going through their Evil Cycle are so dangerous to others. There also exist a portion of demons who succumbed to their evil desires, retaining their clear thinking but also being permanently true to their inherent desire as demons, a state very dangerous state called "Return to the Origins")
*Transmutation (With transfiguration magic, the caster can change the form of the target, and even one of the most basic spells like Transform canMairimashita! Iruma-kun Volume 20; Chapter 171 change the color and shape of thingsMairimashita! Iruma-kun Volume 6; Chapter 44. Part of the first-year magic class in school is to learn simple verbal spells focused on transformationMairimashita! Iruma-kun Volume 9; Chapter 76 and illusion)
*Illusion Creation (Part of the first year magic class in school is to simple verbal spells focused on transformation and illusion)
*Fire Manipulation (Students of first years who have only learned the basics of magic know the spell La Fire)
*Gravity Manipulation (Fractal is a gravity manipulation spellMairimashita! Iruma-kun Volume 11; Chapter 92 that students learnMairimashita! Iruma-kun Volume 32; Chapter 278 in their first year at school)
*Forcefield Creation (Through the basics of magic at school, demons learn how to use a spell like Gran that creates a defensive barrier, a spell that one can use just with knowledge, regardless of mana capacity. Additionally, there exist more defensive spells that demons can learn or develop when they grow stronger)
=== Resistances:=== 
*Transmutation (Demons have resistance against the spell Transformation, so even if affected, they will turn to normal shortly afterMairimashita! Iruma-kun Season 1; Episode 23)
==Zayin-Rank Demons==
All previous abilities and resistances to a greater extent plus;
*Extrasensory Perception (The danger sense of high-ranking demons is so high that even under the effects of illusion magic and in an altered mental state they can feel blooslustMairimashita! Iruma-kun Volume 28; Chapter 244, even if they are completely focused on something else they can detect the danger from far awayMairimashita! Iruma-kun Volume 28; Chapter 248)
*Telepathy (Demons of this rank can telepathically communicateMairimashita! Iruma-kun Volume 4; Chapter 30 with other demons)
*Text Manipulation (The ability to manipulateMairimashita! Iruma-kun Season 2; Episode 7 text appear to be a commonMairimashita! Iruma-kun Volume 5; Chapter 37 powerMairimashita! Iruma-kun Season 1; Episode 4 amongMairimashita! Iruma-kun Season 1; Episode 5 demons of Zayin rank and higher)
=== Resistances:=== 
*Illusion Creation (At this point demons are so strong that they can break through illusions with brute forceMairimashita! Iruma-kun Volume 28; Chapter 245)
*Fear Manipulation and Madness Manipulation (Type 3; Teachers of Babyls have shown to retain their mental stability after look at the artworkMairimashita! Iruma-kun Volume 38; Chapter 332 of BeemMairimashita! Iruma-kun Volume 38; Chapter 333, something that would destroy the student's mindsMairimashita! Iruma-kun Volume 38; Chapter 338 with a little glance, and they looked at one of the magnum opus of Beem)
==Chet-Rank Demons==
All previous abilities and resistances to a greater extent plus;
*Telekinesis (Experienced demons, like those of Chet Rank have show the ability to telekineticallyMairimashita! Iruma-kun Volume 2; Chapter 14 moveMairimashita! Iruma-kun: Kalego Gaiden Chapter 2 objectsMairimashita! Iruma-kun Volume 29; Chapter 254)
* Summoning (Demons of this rank and above have shown the ability to make appearMairimashita! Iruma-kun Season 1; Episode 10 several things with a simple snap)
===Resistances: === 
*Sound Manipulation (Demons of this rank and above have show to notMairimashita! Iruma-kun Volume 2; Chapter 8 suffer fromMairimashita! Iruma-kun Season 1; Episode 5 the scream of the Ring of Gluttony)
*Disease Manipulation (Strong demons aren't affected byHoukago no! Iruma-kun Volume 2; Chapter 20 diseases)
==Tet-Rank Demons==
All previous abilities and resistances to a greater extent plus;
===Abilities:===
*Likely Longevity (Demons of high rank seem to share the trait of being able to live long, as many of them were even active before the Demon King Delkira disappeared hundreds of years ago)
*Possibly Underwater Breathing (High-ranking demons seem capable to spend long periods underwater withoutMairimashita! Iruma-kun Volume 28; Chapter 249 any visibleMairimashita! Iruma-kun Volume 35; Chapter 306 problem)
*Stealth Mastery, Invisibility and Sound Manipulation (Those of Tet Rank have consistently shown to be able to useMairimashita! Iruma-kun Volume 34; Chapter 297 Encrypted SpeechMairimashita! Iruma-kun Volume 17; Chapter 146 which is concealment magicMairimashita! Iruma-kun Volume 34; Chapter 295 of the highest rank that prevents others from seeing or hearing the caster)
==Weaknesses==
The wing root is a vital organ for demons, and if damagedMairimashita! Iruma-kun Volume 29; Chapter 253 they won't be able to bring out their wings and their nervous system will begin to shut down, along with several other serious effects. Demons have always been terrible at staying focused, so when they need to be perfectly synchronized with others for long periodsMairimashita! Iruma-kun Volume 18; Chapter 153 they will go through unimaginable agony. This is not to say that they can't stay focused at all on things or that perfect teamwork is impossible to demons, as it has been shown through the series of several cases that go against such notion, however it is still important to note that to the average demon such things are near impossible. Demons love interesting things, and when they encounter something that piques their interest, they show absolutely no restraint.
==References==
Category:Mairimashita! Iruma-kun
Category:Verse-specific Powers and Abilities