Abilities:
Spirit Siphon -
This is the most noticeable skill of a Devourer demon. Kirah jokes about the physical eating of individuals, most Devourer demons don't necessarily care for the flesh of others, but rather the energy in the air. It is a passive capability of theirs to take in small amounts of energy through the atmosphere and filter it through their system. But the Spirit Siphon can be more dangerous than simply able to soak up passive, residual energy hanging in the air.
You will note when you are near Kirah he has no shadow. Instead there is a 75 centimeter circumference, about the circumference of a basketball, black shape under his feet at all times. This circumference actually is the main body of his true form. All though it might not entirely be his main body, but his stomach. The information is really limited on exactly it is.
When enemies pass through this circumference, something they have to do so in order to hit him in the first place. A part of the spirit energy they activate gets absorbed into the main body of the Devourer demon. This is what causes the fluctuation in their power and energy.
Of course in combat this is not power Kirah can store. Because he uses what is siphoned to strengthen his demonic energy. Thus it is always a constant exchange of taking power and spending it.
And because of this Siphon ability it means Kirah has slight, only slight resistance to spiritual energy coming to him. It's not easy to overwhelm Kirah when you are weaker than him or at the same strength as him. Those with higher levels of spiritual energy may be able to overwhelm him in the beginning of the battle, but if he Siphons enough he may be able to direct damage done to him.
High Physical Resistance -
Kirah can take a beating that's for damn sure, at least compared to a human. He seems unphased by punches that have no spirit energy in them. And he also seems completely unphased when small family sized sedans crash into him. He actually smooshes their hood more than they smoosh him. Though this doesn't mean he can never take damage.
If he's not taken enough energy from a higher class of demon then him, he's going to feel it. It may take him a while to topple over, but his aura guards him. The stronger his aura is dependent on the amount of energy he has been able to siphon.
When it is simply the residual energy hanging in the air, nothing normal can really hit him. But powerful demons and spirit energy can. But when he has actually taken the energy of something strong he has a greater guard for spiritual energy attacks.
This weakness however does not apply to Kirah when he is in rage form. He seems to take spiritual energy attacks with more gusto when he is in rage form. But this can prove a poor strategy considering it is throwing oneself in the thrust of battle that kicks in survival instincts. Survival instincts that spur on changes like going into his Berserk form.
In his Berserk form is when he has the highest resistance. Lower demons cannot touch him and will end up being chow. Moderate demons may struggle. And only Top Tier and other Special Class demons can really make his Berserk form submit in pain. But even that takes a damn while because Kirah completely lost his mind at that point he's so feral he doesn't even register the world.
Greater Strength -
He's a lot stronger than a human though. While his Spiritual Energy on its own may be at a D rank, his physical strength is still greater than a human. Greater in this circumstance means he can lift a human and weaker demons with one hand with sheer ease. It means if he flexed his arm out, he could use his strength alone to stop either small motorbikes, or small family sized sedans. And this amount of greater strength doesn't necessarily change much in his rage form.
The Berserk form is much more different, it can barrel through semi trucks like they are lightweight champions in a wrestling match. Seems more capable of taking down a small office building if it wanted to.
The only time his strength really wanes is if he's really exhausted all of his reserves or has taken quite the beating.
Tail Manipulation -
Just like any common house pet, Kirah has full control over his tails. Able to direct and manipulate in any direction he pleases. He has five at his disposal.
Skills:
Dirty Fighter -
Kirah has no formal master or trainer of martial skills. Actually his combat style in battle seems to be one that overwhelms the enemy with a quick, dirty street fighting method. He hunches his back a little, hunkers down only slightly and fights like a feral dog. Though there is more method to the way Kirah fights, feral dog gives the impression of an unskilled fighter. When the reality is that he is a very skilled fighter with no name to his style.
To demonstrate his style, I am going to reference
a little over to Iori. Somethings are different. While he has a stance similar to Iori and I sort of like the slashing combos and overwhelming brute strength with rushing combos. Kirah does not have purple fire. He can, explained in his powers, extend his main body out from the floor and send a wave of those tails with dog heads on them to chew you up. So if you do watch the video assume any time Iori sends out fireballs, it's more like Kirah sending dogs or mass of shadows to whip you instead.
Excellent Reading -
It's very clear Kirah knows where to hit and how hard to hit his enemy. He goes for soft spots, vitals, and important parts that can bleed out quick. He doesn't seem to waste any energy sinking his claws into his enemies and piercing through their skin. He hits where it hurts. If you have a weakness and he spots it, he will exploit it. This is what makes him such a skilled killer.
Criminal Connections -
This is all I am going to say on the subject. Kirah seems to have criminal connections in the City of Vices and the Demon City, as well as connections with humans in the Black Market. This is why he was chosen for your mission.
Excellent Cook -
He is an excellent cook, however, and told me of all the ingredients to make a delicious Summer Hot Pot. The broth was light and delicious. The meat was tender and sweet.
Crooked Handwriting underneath - I served him one of his guards.
Koenma Horrified Face - I am going to be sick!
D-Rank Powers:
*Powers are not transferable between the transformations. D Rank Kirah has no capability of dipping into any of the powers he has in other forms. The only power that transfers to all the forms is spirit claws.
Spirit Claws - Kirah main weaponry is his claws. Terribly sharp. They can slice pretty deep. But to make them even sharper, he coats the tips of his claws with enough spirit energy to cut through even stone and armor. Keeping his claw tips with spirit energy just requires he has spirit energy to do so. If Kirah exhaust his reserves his claws are useless.
Rage - B Powers:
*Spirit Claws
Reiki no a Shuryō Kemono [Aura of a Hunting Beast]
Something is different about Kirah. He focuses all of his energy into him, channelling the energy he has collected into a more focused energy now. His Rage is his weapon and his strength. In this transformation part of his main form seems more bubbled up at his surface. Whipping tails no longer disguised at the bottom of his feet. Whipping tails with hungry maws, snapping and licking their chops. Salivating at the meal in front of them.
You can feel the beast hungry. Behind him. Maybe in his aura you can see the face of the beast that lies waiting. You see a dog wolf head, licking its canines and snarling at you. It's hungry you can feel its hunger and you can feel you are being preyed upon.
Weaker demons freeze in fear at the sight of such a beast. Stronger demons know that this is the beast sending out its warning. Clearly it's an intimidation tactic, but now Kirah cannot disguise his aura any more.
Kappatsuna Hanto [Vigorous Hunt]
It's not that the Siphon no longer works in the forms. It simply seems to work differently. With every swipe of a claw. Every teeth from the jaws of the wolves, he only seems to grow stronger from your pain as you grow weaker. The Siphon no longer takes energy from you indirectly as you enter his space, he is directly drinking it from you through your wounds. The more he tears into you. The more energy he takes from you.
But just like the Siphon, none of this energy is kept for too long. With every attack he also expels the energy he is taking from you to fuel his attacks. You can't take back your energy, but he's already used what he needs from you.
Fugō no Akuma no Inu [Mark of the Demon Dog]
As the demon dog breaks into your skin. He leaves trails of a unique spiritual energy into your wounds. Even if you escape battle he may still find this signature he has left in your wounds and track you down. You're lucky, if you can run to safety in the next 10 to 15 minutes the mark fades. Kirah has trouble following the trail in areas where spirit energy muddies the trail or another person's strong energy floods the area leaving the trail broken.
That is though if you're lucky.
Beserk/True Form - S Powers:
Kirah cannot transform into his Berserk/True form willingly. It is impossible for him to do so. As his species has adapted to making itself more appealing to human eyes, the only thing to break that spell is through a struggle of life and death where the beast feels its life is threatened. Or if the creature experiences a circumstance of great grief to something or someone dear to them.
Kirah has no mind of his own in this form. Friend and foe are nearly the same to the appetites of a Devourer when it is in this form. In this form it is about surviving and wiping out all threats in its path to make sure it ensures its survival.
*Spirit Claws transfer, and Spirit Jaw is added, same ability, but now with teeth and claws
Yūgaina Kokyū no Akuma Inu [Demon Dogs Noxious Breath]
It's easy to assume or mistake the mist this creature spits out as acid or poison, since it corrodes anything that gets in its path. But that is not entirely the case. The Demon Dog is not an acid creature nor a fire creature nor a poison creature. Instead those noxious fumes that corrode cement, and steel, and have those that cannot take the stench faint, is created from the rotting flesh that decomposes in the mouth of the demon dog.
The fumes has two features. It can eat away at open wounds, corrode cement or steel, and for weaker demons either completely corrode them into nothing or some simply faint from the smell of dead meat. Not just any dead meat, but the dead, rotting flesh of other demons, decomposing in its mouth.
Most can guard themselves from the corroding effects through guarding themselves with large amounts of their aura, though those that can do this are top tier demons or special class demons themselves. Weaker demons can run out of the spray behind a stone where it corrodes the stone, but may need to hold their breath as to not pass out from the stench alone.
Fugō no Akuma no Inu [Mark of the Demon Dog 2]
You thought you could get away? Not from this beast. If it doesn't tear you to shreds. It will make sure you do not survive the encounter with it for too long. While Mark of the Demon Dog in Rage Form tracks their enemies. The true form has no desire to track down an enemy.
Instead every slash you took from the demon dog infects the wound with a powerful bacteria, that either sickens you into submission even if you manage to get away prepare for a fever that feels like your insides are burning, and there are needles in your skins as you begin to profusely sweat. Or the more likely is the bacteria in your wounds eats away at all the tissue till your limb falls off, and even then if you don't get treatment the bacteria will continue to spread throughout your body as you die in agony.
Hauringu Hōki [Howling Demise]
Kirah extend a large paw out and tilts his head to the sky and begins to howl. Sure you can cover your ears to drown out some of the loud rumbling howling of the dog wolf shadow monster, but it won't do you much good. It's not the sound that will get you. Those who are not aware of it, don't realize it's not the howling that gets you, it's the sheer force and vibration of the howl that is laced with spirit energy that literally has enemies explode without a chance. Bones, flesh, muscle, all explode in one goop pile. Because of this, I have updated your watches with a blocking device that shields you in a different vibration so the vibration of the howl cannot touch you. In theory. Aren't you lucky you are the first to test this theory. If you start to feel shaky, good idea is to just run.
*Kirah once he transforms back from his true form back to his normal rank is so exhausted he cannot do much of anything else and may entirely pass out. He is completely helpless after his transformation into his true form.
Weapons: NA - I have claws. Why would I waste my time with flimsy objects?
Equipment: NA - Bringing stuff is a lot of work and the effort of having to carrying it everywhere and not forget where it is, is annoying. If I know it will take a long time I will bring snacks.