Infamous Smog

Infamous Smog also known as "Smoke Lord damnation" is a powerful supportive and offensive sacred gear. Infamous smog possesses the soul of the Fire Arch Demon Lord Adramelech a demon who during the Original Great War commanded over fifty legions, he is also the father of the current Flame King of the Demon Council.

Infamous Smog being a powerful supportive and offensive sacred gear possesses a ability that can be dangerous to both the wielder and those around them, the ability to manipulate, absorb, and create smoke.

Summary
Infamous Smog is one of the few sacred gears known as a "demon lord gear" because it possesses the soul of the Arch Demon Lord Adramelech who died at the hands of Zekram Bael himself. Adramelech was a arrogant demon lord who wanted to take over the Underworld and Demon World with his wife Ravana, another powerful fire demon at his side. The two commanded over fifty legions and would lead attacks on both the Underworld and the Demon World. During a battle in the Underworld, Ravana was killed by the fallen angel who possessed the sacred gear Chaos Gear.

This at the time being unheard of caused Adramelech to have a psychotic break understanding how something like this was possible, while having a psychotic break Zekram Bael slayed him with the power of destruction, evaporating his entire body, God then sealed him inside a sacred gear before he could regenerate using his soul. Because of this, Adramelech is shown to be bitter, hateful, cold, angry that his wife's death, insane, and nasty towards his possessors not caring if they live or die. Some possessors of this sacred gear even state they can hear a voice telling them to "burn away everything" from this sacred gear.

Due to this sacred gear being difficult to control, partly due to the demon lord sealed inside of it, a lot of wielders activate it as a infant and due to lack of control over it they end up killing themselves by the smoke, another common occurrence is teenagers accidentally blowing themselves or those around them up because of the gas this sacred gear creates. Because of these two things being so common with this sacred gear it has gained the name "Youth Killer".

Appearance
Infamous Smog takes the appearance of a silver pendant in the shape of a sword. The wielders typically wear it around their neck using some form of lace, most commonly a silver chain to match the pendant. The second form of this sacred gear is a giant, heavy pillar stationed on the ground.

Abilities
Due to possessing the soul of the famous Arch Fire Demon Lord, Infamous Smog possesses the ability to manipulate,absorb, and create smoke. The most commonly used variant being to create smoke, the smoke this sacred gear can create varies in properties and abilities with some of the gases this sacred gear create being poisonous that can kill the wielder if they inhale too much, others being sleeping gas, paralyzing gas, and others being combustible gas. The wielder can also absorb gas from other sources (for example cars) in order to increase their own power and stamina temporarily. The wielder is also capable of creating animals made of smoke out of this sacred gear, for example being able to create a dragon entirely made of poisonous smoke. Infamous smog also allows one to turn their body into smoke and regenerate using a nearby smoke source.

Infamous Smog (second form)
The second form of this sacred gear possesses all the properties of the first form adding the ability to absorb attacks using smoke acting as a form of defense, the absorbed attacks can then be redirected using the smoke but will also have added fire damage along with the power of the initial attack.

Drawbacks
It is impossible to control the smoke once the wielder releases it into the air meaning it's possible for them to be killed by their own poisonous gases. Creating smoke also consumes the wielder's stamina. The wielder must also have a general idea of the gas they are trying to create. And last, the wielder is forced to endure the nasty and spiteful voice of the Demon Lord who lives inside the sacred gear.

The drawback of the second form is the wielder is forced to stay in at least fifteen feet of this sacred gear (being forcibly pulled back if they try to move more) they will be unable to change locations because the sacred gear form is too heavy to move even for a rook like Koneko.

Trivia

 * The abilities of this sacred gear were unintentionally taken from the infamous series (where I got the name from).
 * The initial form of this sacred gear is the image of Gray Fullbuster's necklace from the Fairy Tail series.
 * This is the first demon gear I ever thought of
 * The second form abilities is also unintentionally based off of the Abbadon family Power of Hole although I added the extra fire damage part.