It's like giving a medical student six years of textbook knowledge and then asking them to treat late-stage cancer; they've entered the field, but they haven't been buried yet.
However, Leng was a bit curious if her own gouged-out eyeballs wouldn't grow back, but she decided not to experiment with such ruthless operations on herself.
She would wait until she could use Reversal Technique to treat others before trying it, first experimenting on small rabbits, and then letting enemies serve as test subjects.
However, Leng now planned to test which was faster at healing: her newly initiated Reversal Technique or her Mystical Palm Technique, which currently lacked Yang Release properties.
To control variables, she needed to use two similarly sized masses of healing energy to heal wounds of similar depth.
However, Leng was very afraid of pain, so the clever Leng used a Chakra Scalpel to first sever the nerves in her arm, so she wouldn't feel any pain. Leng felt incredibly intelligent.
Taking out her most precious Ame no Habakiri, Leng carefully sprayed it with alcohol for disinfection, and then it was time for self-mutilation. (Children and teenagers with depression should absolutely not imitate this.)
Ame no Habakiri was incredibly sharp; with just a light press of the blade, Leng's tender arm was cut open, the depth about one-third the width of Ame no Habakiri.
Ignoring her bleeding arm, Leng first pressed a tennis-ball-sized mass of positive energy, derived from the multiplication of Reversal Technique, onto the wound.
No overly precise manipulation was needed; the bleeding quickly stopped, and blood vessels, muscles, and skin healed simultaneously. The wound was fully recovered in about two seconds.
Like Medical Ninjutsu, healing occurs through cell division and differentiation. However, if advanced Yang Release is involved, the Six Paths Power can cause differentiated cells to become stem cells and then re-divide and differentiate.
This was recorded in the Medical Ninjutsu scroll Tsunade gave her, meaning that if your mastery of Yang Release is high enough, you can slowly replace your own aging, non-regenerative cells, achieving longevity.
Leng estimated that Hashirama's cells were like this, capable of automatically undergoing cell dedifferentiation, allowing differentiated cells to become stem cells.
Whether Reversal Technique could reach such a level was not described in the transmitted memories, but it was likely possible.
After all, Gojo Satoru's brain was once pierced by Toji's Inverted Spear of Heaven, and brain cells are non-regenerative, but Gojo Satoru still healed himself.
Looking at her arm, now smooth as new, Leng cut another wound of the same depth and applied a similarly sized mass of Mystical Palm Technique Yang Release.
This time, there was a difference: Yang Release required precise control, first healing nerves, then blood vessels, and finally muscles and skin. Although the speed was similar, it was more complex.
Because Yang Release can be somewhat uncontrollable, if applied directly to the wound, the muscles might heal while the nerves and blood vessels remained severed, occupying the original positions of the blood vessels and nerves.
Finally, Leng looked at her Ten Shadows Technique. If the positive energy obtained from Reversal Technique was injected into the innate technique, then Technique Reversal could be performed.
Although Leng's Curse Power was not abundant now, it was enough to perform Technique Reversal a few times. Leng planned to see what the Ten Shadows Technique Reversal's ability was.
Logically, the effect should be the opposite, such as repulsion becoming attraction, or infinitely small becoming infinitely large, and so on.
But for the Ten Shadows Technique's Reversal, Leng had no idea; she hadn't read the later chapters of the Jujutsu Kaisen manga when she transmigrated.
So Leng decisively performed Technique Reversal on the positive energy she obtained from Reversal Technique.
"Berserker, so that's it! It allows me to borrow the Shikigami's abilities for my own use." (Fan theory, not sure if it's correct, couldn't find it online either.)
Leng was somewhat amazed by the heaven-defying nature of the Ten Shadows Technique's Reversal. No wonder Lord Sukuna could adapt to Limitless and then use the Space Slash.
Although Leng hadn't tamed Mahoraga yet, wasn't she allowed to fantasize a bit?
At that time, with Mahoraga's wheel above her head, she would first adapt to various Ninjutsu, Forbidden Technique, and Genjutsu, and after becoming immune, she would adapt to Sealing Technique and Sage Mode, and finally find a way to adapt to Six Paths Power.
"Waka kka kka!" Leng looked at the ceiling triumphantly and laughed like a pig. This was definitely a late-game ability!
If she used Six Paths Obito, Six Paths Madara, and Ōtsutsuki Kaguya as sparring partners to adapt to Six Paths Power and various Rinnegan, then in Boruto, she could make Ōtsutsuki Isshiki and Toneri Otsutsuki pee themselves.
However, the current Leng could only use two Shikigami abilities at once, and unfortunately, the abilities of the Shikigami she had tamed were relatively weak.
When she used Technique Reversal to utilize Jade Hounds' ability, it enhanced her biting force, slightly increased her strength and speed, and gave her a keen sense of smell.
Mainly, Leng's physical fitness was too strong now, so the amplification seemed insignificant.
When she switched to the Toad, Leng felt her tongue become incredibly flexible, able to extend and retract. She could even use her tongue to bind others like Orochimaru, but it was too bizarre and perverted, and Leng stated she couldn't accept it.
The Toad's ability was too much like Orochimaru's: the tongue could be long or short, extend or retract, and people could be hidden in its stomach. She could even spit out scrolls and the kusanagi sword from her mouth like Orochimaru. Thankfully, she couldn't spit out toads, or toads spitting out people.
Escaping Rabbit, on the other hand, was more interesting; it could turn her Shadow Clone into physical entities that could withstand attacks and were indistinguishable from the original.
After this, Leng's Shadow Clone would definitely make enemies feel unbelievable. You thought it was just what you thought? All of them are physical entities, so are you scared or not?
Moreover, Leng felt that she could use Multiple Shadow Clone without backlash now. This was Escaping Rabbit's ability: thousands of physical clones, a war of attrition could exhaust even those she couldn't defeat.
Unfortunately, her Curse Power couldn't sustain the Reversal Technique for long. In high-intensity combat, she would probably run out of Curse Power in ten minutes, even though her Revolving Sharingan with three tomoe recovered her Curse Power extremely quickly.
Leng estimated that she would only reach the level of a Grade 1 Jujutsu Sorcerer in terms of Curse Power when she attained the Three-Tomoe Sharingan, allowing her to maintain a balance between Curse Power consumption and recovery in low-intensity battles.
Upon achieving Mangekyo, she would likely be similar to Gojo Satoru, with virtually infinite Curse Power, provided she wasn't fighting against Kage-level existences.
Later, using the Reversal Technique with the Great Serpent's ability would allow any part of her body to undergo soft body modification like Orochimaru, with strong resilience. Additionally, she could spit out poisonous mist, and finally, she could move through the earth.
It wasn't bad. Combined with the Toad's ability, cosplaying as Orochimaru would probably confuse Orochimaru himself.
The last one was Nue's ability, which was definitely the most useful. She could grow white wings on her back for flight and wield purple lightning that could ignore defense. This was transformed from Curse Power and was not part of the Chakra system, so even Truth-Seeking Orb probably couldn't block it.
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