As the system's prompt faded, an energy entirely different from when he upgraded his Sharingan descended into Yamada's body out of thin air.
If Yin Release was a bottomless, cold abyss, then the Yang Release flooding into his limbs and bones at this moment was a warm, gentle, yet vibrant sun. There was no pain of tearing meridians, only an indescribable sense of comfort.
Yamada clearly felt every cell in his body greedily devouring this vast life energy. His mental state, which had previously leaned towards cold and violent due to over-reliance on the Sharingan, gradually tended towards a perfect balance under the neutralization of this warm current.
Yin and Yang converged. Although this did not yet reach the level of Naruto's Six Paths Yang Power in the late stages of the story, simply mastering the nature transformation of Yang Release was already a medical miracle in this world.
Yamada opened his eyes, a gentle glimmer flashing through his pitch-black pupils.
He raised his right hand, his thoughts stirring slightly. A soft, pale green light condensed in his palm, and the rich vitality contained within the light even caused a grass seed in the gap of the tatami to break through the soil and sprout, growing into a blade of grass in just a few seconds.
"This is the power to bestow life." Yamada clenched his fist, the green light dissipated, and the grass stopped growing.
He pushed open the door and walked back towards the backyard.
At this moment, Kyojuro was sitting by the corridor, with Shinobu performing a routine post-battle physical examination on him.
Shinobu held a stethoscope, her brows furrowing tighter and tighter. "Rengoku-san, your cardiopulmonary function just experienced an extremely dangerous overload."
She put down the stethoscope, her expression serious. "Although there are no external injuries on the surface, your cellular activity has been severely overdrawn. If what Yamada said about the Demon Slayer Mark's price is true, your current physical condition means your lifespan has been reduced by at least one year."
"This is already the best result! Everyone, do not worry about me!" Kyojuro responded loudly.
"As a doctor, how could I not worry?" Shinobu bit her lip.
The casualty rate of the Hashira of the Demon Slayer Corps was already extremely high, and now there was the Demon Slayer Mark that overdraws life. This made her feel deeply powerless regarding the future decisive battle.
"Don't look so gloomy, it's easy to get wrinkles." Yamada's voice sounded behind the two of them.
He walked up, casually ruffled Shinobu's hair, and then sat down beside Kyojuro.
"Yamada? Do you have any way to deal with this?" Shinobu asked eagerly, unable to bother swatting his hand away.
She knew well that this man always harbored endless miracles.
"Extend your hand." Yamada looked at Kyojuro.
Kyojuro did not hesitate, frankly extending his sturdy arm.
Yamada extended two fingers and placed them on the pulse point of Kyojuro's wrist.
The next second, Yang Chakra flowed continuously into Kyojuro's body from his fingertips.
Kyojuro felt a warm current coursing through his whole body, and his internal organs, which had been aching faintly from forcing the Demon Slayer Mark open, greedily absorbed nutrients under the envelopment of this warm current. The depleted cellular activity refilled at a speed visible to the naked eye.
In just ten seconds. Yamada withdrew his fingers.
"Check again." He signaled to Shinobu, who was watching in a daze.
Shinobu picked up the stethoscope again, half-doubting, and when she probed Kyojuro's heartbeat and pulse again, those purple eyes widened instantly, her face full of disbelief.
"This... how is it possible?" She murmured to herself.
"The depleted vitality has been replenished? Not only that, but even the old hidden injuries have healed? This violates medical common sense."
"I feel as light as if I'm about to fly! Even my breathing is a hundred times smoother!" Kyojuro waved his arm, pleasantly surprised.
Yamada stood up and brushed off his clothes. Having mastered Yang Release, the lifespan limitation of the Demon Slayer Mark could be solved as far as he was concerned. As long as the person wasn't completely dead, he could forcibly pump vitality back into them.
"The so-called price is only because you lack the means to replenish life energy."
Yamada looked at Shinobu, the corners of his lips slightly raised. "Since this trick works well, pack up. We'll go to the Ubuyashiki Estate tomorrow."
Shinobu was stunned. "Go to headquarters? Master hasn't summoned us."
"To treat an illness."
Yamada put his hands in his pockets, his gaze looking into the distance. "That master of yours, whom you revere like a god, wears that face corroded by a curse every day and coughs like a broken bellows, it's an eyesore to look at."
Since he wanted to make the Demon Slayer Corps his eyes and ears for searching for Muzan, he would just as well remove the short-lived bloodline curse of the Ubuyashiki Family while he was at it.
[Dimensional Template System]
[Host: TanakaYamada]
[Current Template: Sasuke (Eternal Mangekyo Sharingan Period)]
[Template Compatibility: 100%]
[Skills]
Ninjutsu: Yin-Yang Release (initially formed) (Lightning Release, Fire Release, Yin Release, Yang Release), Substitution Technique...
Dojutsu: Eternal Mangekyo Sharingan (No side effects. Includes extreme insight, immunity to Genjutsu, Amaterasu, Kagutsuchi, Perfect Susanoo)
Taijutsu: Uchiha Style Kenjutsu, Sharingan Taijutsu.
[Items Held: Kusanagi Sword: Modified, Wisteria Sachet]
[Dimension Points: 3,990]