Six Paths Yang Power (Seireitou)

The Six Paths Yang Power is a sealing mark adorned by an individual in order to invoke the highest degree of Yang Release. It was first stumbled upon by Hagoromo Ōtsutsuki, its inventor, who discovered the method after thoroughly studying his mother's abilities. It is represented by a light-colored, sun-like marking on the user's right palm.

Overview
Yin and Yang are the absolute dual forces in the universe. Everything rises and falls with them in perfect harmony. One gives birth to the other and vice-versa, establishing a perfect balance. It is because of their existence that creation was allowed to progress, causing the iron hold of primordial darkness to vanish from the ruling seat. Yang's role is the breathing of life into form and represents the physical energy of the dual energies that compose chakra.

Hagoromo Ōtsutsuki used this power in conjunction with his power of Yin to create the nine tailed beasts through the Creation of All Things technique. After Yin was used to divide the Ten-Tails' form into nine individual species with unique shapes, Yang was then used to breathe life into each of the forms. However, life is not born from nothing. Just as the laws of the universe dictate that energy cannot be created nor destroyed, life itself is constant throughout the world and must exist in some way for it to be instilled into another form. In this way, conservation is maintained and the universe continues flowing naturally. By taking away the life of his mother, Kaguya Ōtsutsuki, he took her life force following her sealing away and divided it among nine equal pieces so as to give life to his nine creations. Life carries with it, all of the essence that makes people individuals. It contributes to our personality and our development. As such, each of the nine personas that compose the nine beasts are all pieces of Kaguya's core personality from when she was alive. Shukaku's persistence at carrying out his goals, Matatabi's elegance and grace, Isobu's sternness, Son Gokū's sage-like wisdom and martiality, Kokuō's nobility, Saiken's desire for peace, Chōmei's sense of and freedom, Gyūki's seriousness and intolerance toward tomfoolery, and Kurama's superiority complex; all of which derive themselves from Kaguya's life and became the Yang force that breathed life into the nine fragments of bijū chakra. In this sense, Hagoromo reveals that the Yang Power carries the ability to essentially manipulate life itself at one's fingertips. When wielding life in one's hand, the seal will glow a bright red and emit a reddish radiance in the form of flames that represent the life in one's hand.

While he did not bear the actual seal but did in fact gain the power of the Sage himself, a fragment of Hagoromo's Yang ability was displayed by Obito Uchiha when he first became the jinchūriki of the Ten-Tails. The spikes on his back would emit a red flame that signified the use of Yang; commonly demonstrated when he would heal himself. The seal's most commonly used application is instantaneous healing. By invoking the life-breathing aspects of Yang, one may instill or restore life within a given frame by manipulating their own life force and utilizing it to restore a part of their body in which life has been disrupted; in other words, when damage or injury has been sustained. Obito also showed channeling the Yang portion of a Truth-Seeking Ball near him in order to utilize it as a healing agent. When doing so, the orb glowed a bright red, the same as the flame carried by Hagoromo when holding life in his hand, which then allowed him to repair the damage wrought upon his body by Naruto Uzumaki's Rasengan.

Demonstrated by Seireitou Hyūga, the Yang Power can be used in an offensive manner against one's opponent by completely paralyzing them and restricting their movements. Yang rules life; therefore, it rules over the physical energy of the relationship that produces chakra. Physical energy is present in the cells of all living beings. Because of this, it also ties into the body's organs and bodily functions, but also their central nervous system. It is the aspect of one's body that regulates the gathering of natural energy as well, as natural energy is only produced when there is life in nature and it can only be wielded by another being that is in tune with all of life around itself, and allows it to transition the body into the Sage Mode transformation. When these aspects are neutralized and restricted, it can lead to a variety of dangerous results such as organ failure and the eventual decay of the body. In this sense, Yang may give life but it can also take away life in the same manner. However, it depends upon how severely its power is applied onto the victim; it can range between simple negation of muscle movement to outright life-taking.

As noted by Black Zetsu, there is a special resonance between the Yin and Yang powers, allowing the wielders to sense each other's presence but also to connect chakra together even when split apart from a distance; as demonstrated by Seireitou and Ryun Uchiha. When the Yin and Yang powers are used together, they can transform their target into the core of Chibaku Tensei. The process of how this happens was elaborated upon by Seireitou. Yin rules spiritual energy while Yang rules physical energy. When the palms close, the users are capable of enacting their will over the opponent. And in doing so, they can forcefully manipulate their chakra, which is composed of those dual energies and are subject to the twin forces, allowing them to convert their chakra into gravitational waves that turns them into the core of the original Chibaku Tensei technique while also ripping away chakra from their form, which leads to their sealing. In essence, Yin alters their form in relation to the universe, which causes them to become the core of gravity, while Yang manipulates their life force and rips away chakra from them. Both seals were designed to target specific energies within the target's body upon coming into physical contact with them. The Yin Seal targets the opponent's spiritual energy, the origin of all dōjutsu, while the Yang Seal targets the opponent's physical energy, that which is present in the cells of all living beings and allows for the use of one's muscles. When both energies are overtaken by the seal, the victim's chakra itself can be manipulated and the users' wills can be imprinted onto their bodies for the fūinjutsu.

Hagoromo's unique staff, which is a perfect application of the Truth-Seeking Ball, bears two separate and different staff ends; each possessing unique ornaments which represent Yin and Yang respectively. Obito was only capable of wielding the Yang portion, which was proven by the fact that he could only manifest the red Yang flames but not the blue Yin flames, and then confirmed when he manifested the Sage of Six Paths' staff and only one ornament manifested.