Idle Transfiguration

Idle Transfiguration is Mahito's innate technique. It grants him the ability to distort the shape of souls and transfigure their respective bodies as a result.

Description
Idle Transfiguration allows the user to reshape the soul of themselves or anyone they physically touch. The shape of the body is dependent on the shape of the soul, so if the soul is distorted, so too is the body. Therefore, someone using Idle Transfiguration can disfigure their target's body into something grotesque by warping their soul's shape with just a touch. This process creates what are known as "Transfigured Humans".

Strengths
This cursed technique attacks the soul directly. Only under certain circumstances can someone protect their own soul and anyone who cannot is instantly killed or deformed by Idle Transfiguration. All ordinary people eventually die after having their soul transfigured.

The user can also reform the shape of their own soul and heal any injuries their body sustained in battle. This renders traditional means of injuring the user useless, as their soul must be attacked to do any significant damage. The user can even transform their body to give them an advantage, such as giving themselves wings for flight or shrinking their body to avoid an attack.

Weaknesses
An individual facing the threat of Idle Transfiguration can stay out of range and use cursed energy to protect their soul from being distorted. However, Idle Transfiguration can still injure the body if the user touches their target, even if it doesn't fully distort their soul enough to deal a fatal blow. Even so, after two or three more direct to attacks to the soul, even if it's being protected by cursed energy, the target will no longer be human.

Techniques like Nobara Kugisaki's are especially difficult to handle as her ability is not only long range but can attack the soul directly through sympathetic resonance. Mahito called her a "natural enemy" of his due to this.

It also has another weakness that Mahito never anticipated due to Yuji's unique circumstances of having Sukuna inside of him is that Mahito cannot transfigure souls selectively and when he tries to use it on someone, he has to touch all of the souls within. This has the unintended consequence of earning the ire of the second soul and potentially putting himself at risk if the other soul is powerful like Sukuna and can attack him while in contact.

The healing aspect of Idle Transfiguration is also useless for handling attacks that target the soul. While Mahito can restructure his body to be normal after an attack that strikes his soul, it still does much more damage than the equivalent done to others via physical attacks and can quickly wear him down. With those whom can harm his soul directly, he tends to avoid them and try to strike at long range.

Domain Expansion

 * Main Article: Self-Embodiment of Perfection

This Domain Expansion conjures a large black environment that is surrounded by giant hands clasped together and traps the target as if they being in the palm of user. This ensures the cursed technique hits the soul of target.

Usage
In his spare time, Mahito uses Idle Transfiguration to experiment with human souls. For example, he transfigures human bodies to see how big and small they can get via disfiguration. He even carries small transfigured humans on his person, which can be manipulated further to create larger monsters that obey Mahito.

Mahito will often transfigure humans by placing his hand on them without killing intent and then suddenly disfiguring their body. Additionally, he uses disfigured humans as monsters to attack his enemies.

In battle against jujutsu sorcerers, Mahito mainly aims to touch their soul and transfigure their body like any other human. He has stated that strong jujutsu sorcerers like Kento Nanami are perfect for experimentation.

In the rare situation that he's unable to touch his opponent's soul (such as the case with Yuji Itadori), Mahito will rely on his personal monsters or changing his body into a variety of different shapes for offensive and defensive purposes.

By reshaping his own soul Mahito changes appendages body into animal limbs for greater mobility, into weapons for increasing killing power, and many more potential abilities. He also uses this same application in order to heal himself after sustaining an injury to his body, and can even heal humans if he so chooses.

As seen with Kokichi Muta, Idle Transfiguration can even be used to completely remove the Heavenly Restriction he had since birth and grant him a normal human body.

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