Asu's Amalgamation Technique

This technique stems from Asu’s deranged psyche and consists of assimilating live human bodies and transferring their consciousness into a gargantuan demonic figure. Asu uses it to combine separate living bodies of organisms into one combined organism but bears no characteristics of any soul that Asu placed into it body, save for numerous skulls that it has absorbed and are scattered along its body.

The creature possesses a monolithic, wicked chakra, by likes of which have never been seen before. This creature gives off an ominous presence, instilling a sense of despair on those that surround it. Since the chakra of this creature is so vile, those that try to absorb it are tainted with its evil intent are tempted with the thoughts of suicide amongst humans. This creature uses the long forgotten, Dark Chakra (闇のチャクラ, Yami no Chakura).

Appearance
It takes the appearance a gray mass that resembles a humanoid visage along with two horns projecting from its head. This creature is gargantuan in size, clearly matching the size of the Island Turtle of Kumogakure. "The eyes of this creature are desolate; they show pure, undying hatred and disdain for mankind. Akin to black translucent marbles, showing an ominous future to those that gaze upon them."

Use
This creature is mainly used by Asu to assist in his process of absorbing Tailed Beasts, Summoning Creatures, and Shinobi alike. While doing so it incorporates the absorbed beings into its own mass, thus greatly increasing its size. The way that the creature absorbs the essence of defeated opponents is by a forbidden kinjutsu, Laws of the Chanting Evil Spirits (言霊邪霊の法, Kotodama Jarei no Hō).

Preparation
Before applying the seal, Asu must have an area set up properly prior to placing the seal similar to Madara Uchiha's Tailed Beasts Extraction technique. By using a method similar to Nagato's Five Seal Barrier Technique, Asu would place his individually marked seals around a certain location to perform the technique thus, drawing out the souls of the recently defeated.

For the technique to activate its sould drawing capabilities, the opponent must further more be branded with a special seal made by Asu. For this, Asu only needs to make a string of hand seals, and by that he will collect a large amount of wicked chakra into his hand and would then grab onto the opponent, preferably the wrist and this would cause the seal to be engraved onto their skin causing a slight burning sensation on the opponent. For the duration of the fight, if an opponent would lose their life within this specific area, their soul would be absorbed by the amalgamation. The only known ways to stop the seals effect, which one would consider non-negotionable, is to actually flee from the area, or to lower Asu's chakra levels to a point where he could no longer maintain the seals effect.

Asu plans to use this creature to absorb the Tailed Beats, for himself by activating a fuuinjutsu to combine the Tailed Beast within himself. But gaining the Tailed Beasts will be a laborious task for Asu, so he steadily absorbs human souls within this mass gaining their power, but all the while very time consuming.

Abilities
Because of the creature’s mammoth size, physical attacks won’t have much effect on its skin absorbs nearly all kinetic energy thats going against it. Any adversary that is thoughtless enough to physically attack the homunculus will be slowly immersed within the being while at a snail's pace assimilates the consciousness of the sufferer. The creatures physical proficiency, are on a scale that which has, on no account been seen before. The creature will cause the ground to tremble, as a result of merely walking along the ground, causing a miniscule indication of trepidation amongst shinobi and with its high defenses, it is able to survive powerful techniques such as, Deidara's C0. An alternate ability of this creature is to spawn “growths” off of its body. The growths are similar to brittle tree branches formed by a soul of an absorbed being. Though the creature is highly resistant to physical attacks, fortunately the growths aren't. The growths from the almagamation are very brittle similar to tree branches, thus they tend to break under strong physical attacks.

The growths are also able to create an exact copy of anyone it has ever touched, down to their chakra. The clones are able to fight on par with an average shinobi, but the clone does not fare well with extended battles and at times below average combat abilities. Sometimes the creature will display rapid regenerative abilities.

The process is instantaneous; allowing it to recover from even fatal damage, as well as resealing its weak-point of his ultimate form should it be exposed. The weak-point, as previously mentioned, is located within the trunk of its body. Though one would find it hard pressed to make it through its thick skin and kinetic absorption abilities.