"Boom!" The moment Nawaki finished speaking, his aura surged explosively. Violent Lightning Release chakra writhed through the air, kicking up a powerful blast wave. His hair stood upright like a Super Saiyan's, while the muscles all over his body rapidly swelled, instantly transforming his previously lean frame into a powerfully built one. Even more astonishingly, the bloody hole pierced through his left hand by the Two-Finger Nukite healed at a visible speed. In the blink of an eye, it had returned to normal without leaving even the faintest scar.
The so-called Kaio-ken was a Nintaijutsu Nawaki had developed by combining the Body Activation Technique, the Eight Inner Gates, and Lightning Release Chakra Mode. Like a Jinchuriki's Tailed Beast Transformation, it could drastically enhance all of the user's attributes—chakra, strength, speed, and more—providing all-around growth. Its self-healing ability in particular had reached the pinnacle. While it could not make one completely immortal like Wolverine, regenerating severed limbs was no problem at all. As long as the heart and brain, the two vital points, were not destroyed, one would basically be unable to die.
After using Kaio-ken, Nawaki's physical abilities instantly tripled. This boost was not to be underestimated. After all, his basic attributes had already reached the peak of Kage-level, while his chakra reserves had surpassed even the Kage-level. Although this True Clone possessed only ninety percent of the original body's strength, after a threefold boost, it was already enough to crush the vast majority of the Shinobi World's strongest fighters!
Thus, the instant Nawaki activated Kaio-ken, every ninja present felt a deadly sense of danger. The Third Raikage, who stood closest to him, was especially stimulated, goosebumps rising all over his body.
With the enhancement of Lightning Release Chakra Mode, many of the Third Raikage's attributes had entered the realm