Very Hiden: Living Corpse Avatar

Is a malevolent technique crafted by Asu Rashoujin and it is one that allows a form of immortality by ending the user’s current life but it allows them to use hundreds of souls as an avatar. Akin to the Very Hiden: Nonself Concealing Calamity it is one that has had a pivotal role in the Sargon’s High Council supplemental ninjutsu arsenal. This technique is the invention of an entity whose sole purpose is to establish an eternal kingdom here in the physical world.

Overview
This technique’s method is very exclusive but also at the same time extremely perilous. You see, this technique works in unison with Asu's Amalgamation Technique and the Laws of the Chanting Evil Spirits. The Amalgamation technique works as a storage facility for the countless souls that Sargon has harvested over the years and the Laws of the Chanting Evil Spirits acts as a collector of the fallen souls. Through the force of Dark Chakra (闇のチャクラ, Yami no Chakura) and astral existential energy. Asu is able to create a technique that allows his High Council members to become immortal to an extent. However, to ensure this technique’s activation, the ultimate sacrifice is required. The life of your own.

However, the user must first be branded with the Pradāśa Seal in order to ensure success. 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 Five-Seal Barrier]], Asu would place his individually marked seals around a certain location to perform the technique thus, enabling the user to die safely. Asu then activates a technique specific hand seal that forcefully destroys the body of the user in a ritualistic sacrifice. However not only is the body of the user is needed for the sacrifice, a total of fifty souls (which are stored in the amalgamation) are needed as well as they construct the metaphysical vessel.

From here, Asu withdraws the required souls from the amalgamation around the soul of the user. Asu uses it to combine separate souls into one combined organism but bears no characteristics of any soul except for that of the user. When the user is reborn, a mass of corpses and souls reconstitute their physical form that mirrored their original form before their death. The technique itself takes a few years to prepare but each soul is only able to use it once. Once reformed, the user retains all of their prior memories before their death and they also become physically and spiritually stronger due to the amount of souls they have within them. The life span is increased by the amount of lifeforce each soul had left before their death. The results of this technique are final and as such, it has been labeled as the most wicked out of all kinjutsu.

Abilities
The user has undergone a change that is philosophical in a sense on each level. As mentioned before, the user gains a form immortality, a massive increase in chakra and physical energy due to the coalescence of souls, and the user also gains an extreme form of regeneration. This regeneration is so powerful that the user can survive having their physical vessel evaporated and would still be able to regenerate in the physical world. The regeneration affects the amount of souls that the user has, so if the user were to “die” they can simply offer a soul in exchange for absolute regeneration. The user will be able to performs that normally require a soul in order to fulfill the effect without giving their own. For all intents and purposes, the user is on a level that surpasses those summoned via Edo Tensei and they do suffer the same downfall. The user is no longer “human” at this point as they have sacrificed their live into maintaining technique.