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Dark DS Magic
Hades Devil Slayer Magic



Meiō no Metsuaku Mahō


Caster Magic
Lost Magic
Slayer Magic
Devil Slayer Magic
Elemental Magic
Molding Magic
Shadow Magic
Darkness Magic


Plutoscuro Noveno
Nazam Karyu

Hades Devil Slayer Magic (冥王の滅悪魔法, Meiō no Metsuaku Mahō), otherwise known as Black Devil Slayer Magic (黒の滅悪魔法, Kuro no Metsuaku Mahō) is a form of Caster Magic, Lost Magic and a powerful type of Devil Slayer Magic, which allows the user to harness and manipulate the element of shadows and darkness, employing all of its forms and additional attributes, in order to slay Demons. Due to the history, power and different legends, which flow around Devil Slayer Magic, Hades Devil Slayers are often called as Exorcist Mages (悪魔祓いの魔導士, Akumaharai no Madōshi), as they are capable of slaying the evil itself, which appears as a demonic one.



Dakness Demon Slayer Magic is a sub-type of very rare Demon Slayer Magic, which can be utilized only by Demon Slayers (鬼力使い(デーモン・スレイヤーズ), Dēmon Sureiyāzu lit. Demon Power Users). This Magic allows its user or users to transform their physical bodies into a Demon's, more correctly, Demon Slayers are able to change their physical body to match the corporeal body possessed by Etherious, which also grants them various characteristics, that are typical for their demonic mentor.

In order to learn Darkness Demon Slayer Magic, the Etherious who passes on the magic to their student, modifies their Magic Origin with their own Magical Barrier Particles (魔障粒子, Mashōryūshi, lit. "Negative Energy Particles"), which changes how the magical energies circulate within their body, therefore causing the Etherious' main ability, the Curse (呪法, Jūhō), to enter the student's body momentarily; as a portion of their own power changes the student's magic into that of Demon Slayer. Continuing with this process, the Magical Barrier Particles of the student acts alongside the magic energy of the body in order to catalyze a variety of bodily processes when younger, therefore allowing the morphing of their physiology to a point where the individual has adopted some physical traits, as well as the element from the said Etherious.

Darkness Demon Slayer Magic allows its users to produce and control darkness element from any part of their body, which can be used in melee combat or for other purposes. Darkness incorporated in this type of Magic is quite different from a standard Darkness Magic and dark element, because of its demonic nature; Dark Demon Slayers can make their body a makeshift weapon unique to themselves and themselves only to the point, that they are able to even turn into their element itself, the form which is renown as the true essence of a demon's existence.

Changed Physiology

As it was said earlier, Dark Demon Slayers like other Demon Slayers, have changed physiology, which is suiting the demonic mentor's one. First of all, it must be said, that they become totally invulnerable to the dark element. Darkness Demon Slayer Magic user is naturally immune to the effects of their own element, that came from both their own person and to those from other sources, and can also consume external sources of their natural element to replenish their own strength and energy. However, Dark Demon Slayers cannot consume the darkness, that they produce themselves, and elements must be consumed through the mouth.

Interestingly, the use of Demon Slayer Magic, is corrupting a mage's souls to a sufficient enough degree for a demon to take possession of their body. Plus the contract that is signed when a mage starts learning this magic is another link that allows the Etherious, who is mentoring them, to take over their body. The more this magic is used, the easier it starts to become for the Etherious to take over. Also the repeated sharing of thoughts and emotions with an Etherious, which happens every time the Etherious tries to take over the mage's body, starts to drive the mage insane, a human's mind just not being capable of processing most of what goes on in a Etherious' head.

Element Traits

It was said earlier, that darkness, which is incorporated in this Magic differs from standard dark element. The generated darkness can be manipulated in a wide variety of ways. Dark Demon Slayers are known to be immune to the effects of Shadow Demon Slayer Magic, in such, they are superior, that their shadow counterparts and seems to be no match for them. The user of Darkness Demon Slayer Magic can utilize their element on not only usual terms. The dark element itself can be utilized in free form and densed form. For example, it is known, that the spell of Kyukyu's register on one note brought the quite big destruction on big village, leaving a nothing, but the hollow crater on the place of whete people used to live.


Basic Spells

  • Hades Devil's Rage (冥王魔の激昂, Meiōma no Gekikō): the user takes a large gasp of air and breathes out a large concussive blast of darkness from their mouth. When used by Nazam Karyu, he attacks with black-green colored darkness; he also can merge this attack with Okina's Arc of Decapitation Spells.
  • Zblackdemonslayer

    In preparing to utilize Hades Devil's Wave

    Hades Devil's Wave
    • Hades Devil's Ray
  • Hades Devil's Zero Flash: Nazam Karyu's spell, which he utilizes from his fingers. Concentrating magic particles on his finger, bruenette creates a small sphere of green colour, after what, he releases gathered energy, which travels to the target of Nazam in a ray-like way.
  • Hades Devil's Light Absence
  • Hades Devil's Spiral Sphere
    • Hades Devil's Spiral Ring
      • Hades Devil's Great Spiral Ring
  • Hades Devil's Solid Umbra
    • Hades Devil's Shadow Clutch
    • Hades Devil's Needle Thrust
    • Hades Devil's Shadow Control
    • Hades Devil's Shadow Hands
  • Hades Devil's Tainted Palms (冥王魔の腐肉掌紋, Meiōma no Funiku Shōmon):
  • Hades Devil's Sword
  • Hades Devil's Contrail Ribbons (冥王魔の印綬, Meiōma no Inju):

Intermediete Spells

Advanced Spells

Subspecies Abilities

Alternative Modes

Every Devil Slayer can awaken specific parts of their signature magic. In case of those, who were experimented by Chain of Disasters, they are able to activate several abilities, which lies as the most inner and the most powerful from their arsenal. Kukyu is able to utilize the power of Contract, Devil Force and lastly, the power of Darknight Identity.


Devil Force

Devil Force (悪魔の力・人間の呪法(デビル・フォース), Debiru Fōsu lit. The Power of Demon Kind: Human Curse): Devil Force is the final stage of the Demon Slayer Magic, the embodiment of the ultimate power which Demon Slayers may possess, though the exact conditions to invoke it vary from person to person. When entering the said form, the user’s body fully transforms into the element the Demon Slayer has in their possession, through saturating the insides of their body and the outsides with an overdose of Magical Barrier Particles. Such form change grants them the enhancement of their physical traits, like strength and speed, and demonic abilities they have, improving their combat capability significantly. Demon Force greatly increases the damage done by standard Demon Slayer Magic attacks, and grants the user access to more advanced, powerful attacks. It also drastically enhances the user's physical prowess, making them far stronger, more resistant and faster, and boosts their demonic power, prompting it to violently become visible, taking on the shape of a demonic visage; when used at the fullest, the generated silhouette seems to gain corporeality, likely as a result of the immense amount of demonic power employed. As the Demon Slayer's entire body turns into their element, after activating Demon Force they are virtually immune to physical harm. They can allow any attack to simply pass through them or simply absorb the attack; it is essentially a boost in the demonic properties that Demon Slayer Magic provides to the user.

Demon God Mode

Demon God Mode (モード鬼神, Mōdo Kishin): Demon God Mode is a special application of Darkness Devil Slayer Magic, it is the Dual Nature Slayer Mode, which allows the user to maintain both the power of their usual Darkness Devil Slayer Magic and consumed Darkness God Slayer Magic. More coming soon...

King's Ascension

King Ascension (モード冥王鬼, Mōdo Meiōki lit. Hades Demon Mode): King Ascension is a special ability of Kyukyu's primal magic, his development of Dark Demon Slayer nature to its utmost limits. More coming soon...