Soon, the medics arrive at the park.

"Where is the patient?" They quickly walk towards Gojo. Gojo quickly explains the situation to them.

The medics place the unconscious genin on a stretcher and carry him to the hospital.

One of the medics inspects Kushina's wounds.

"Where is she… where is Kushina?"

Suddenly, an agile figure flicker amidst them.

"Nee-san!" Nawaki recognizes the voice.

Tsunade spots Kushina lying unconscious in his arms.

"What happened here?" She inspects Kushina's pulse and breathing. Tsunade closes her eyes and concentrates her chakra on her palm.

A cyan glow appears on her palm, which she uses to treat Kushina's external wounds.

Hmm…

Yuji and the rest stare at the process in amazement.

'She is using her hands to transfer a portion of her chakra to the wounded part of the Kushina's body. The transferred charka stimulates the cells around the wound and accelerates the natural healing process of the body. This is similar to the high-speed regeneration in my past life.'

Yuji analyzes the technique used by Tsunade. He shifts his gaze to the unconscious body of the genin to check if other medics are also using this technique.

'That doesn't seem to be the case. Seems like only she can use it.' Yuji speculates.

'The level of precision and the chakra control required to perform such a task is no less than the complex open-heart surgeries from my past life. The amount of concentration and accuracy required is almost on the same level.'

The external wounds on Kushina's body heal rapidly. Her breathing and heart rate become normal as she sleeps peacefully.

"Where is that genin kid?" Tsunade questions the chief medic.

"Umm… Lady Tsunade… we…" The chief medic is struck with a dilemma.

'Lady Tsunade is known for her temper. I will lose my job; she decides to take revenge on the genin for harming her sister.' Even Gojo is in a predicament.

"Umm… Lady Tsunade… why don't you leave him to the medics? Hokage-sama must be waiting for you!" He reminds her.

"Don't worry… it will be quick," Tsunade answers him.

"Umm… but… we can't…"

Tsunade ignores him and walks towards the unconscious genin.

Hmm…

She lowers her head and inspects the injury on the genin's chest. A frown appears on her face.

'Most of his ribs shattered and punctured his lungs and other organs. The shock from the punch also traveled through the body and displaced some organs. Complex surgery is required to treat these wounds. A few blood vessels have ruptured, leading to internal bleeding, but fortunately, none of the nerves were affected. So, it's still possible to treat the wounds and return to the life of a shinobi.'

Tsunade user her 'Mystic Palm Technique' to accelerate the healing of the internal organs.

Huh!

Her frown deepens as she notices small wisps of black chakra wrapped around the inner organs of the genin.

The tale has been stolen; if detected on Amazon, report the violation.

'This black chakra… it's slowly corroding his organs similar to a slow poison. I am afraid, normal medics might not be able to remove it from his body. At this rate, this fellow will suffer multiple organ failures and die a gruesome death. When did little fellow learn such a technique? It looks similar to my chakra enhancement technique.'

She infuses more chakra into her palm and slowly removes the wisps of black chakra from the genin's body. The black wisps of chakra dissipate into the surroundings.

Phew…

Tsunade heaves a sigh of relief and wipes a bit of sweat from her forehead.

"I have stabilized his condition. He isn't in immediate danger anymore. Though he still requires surgery to restore the functioning of his body." Tsunade relays these words to the medic nins.

"Thank you so much, Tsunade-sama!" The few medic-nin bow to her in respect.

'We misunderstood her intention.' Gojo and the chief medic-nin look at each other.

"Thanks for your help, Lady Tsunade. Despite being your senior in the medical profession, I still have a lot to learn from you." The chief medic-nin apologizes to her.

"It's alright! Besides it was these kids' fault for causing such a ruckus." She turns towards the kids.

Minato, Nawaki, Yuji, and the rest have apologetic expressions on their face.

"Minato, Nawaki, Yuji… and especially you Yuji! I will have a chat with you later." Tsunade's eyes narrow. She glares at them with a strict expression.

"Alright, let's meet the old fellow. He must have been waiting for us for a while." Tsunade grabs Yuji's arm.

"I will be back soon. This is a major incident. The rest of you return to your respective clans. Nawaki and Minato… wait for me in the Senju clan compounds."

"Yes, Mam… Nee-san!"

The group hurriedly disperses as Tsunade and Gojo flicker toward the Hokage office with an incredible burst of speed.

"What a pain!" Shikaku murmurs as he sighs and walks towards his clan.

Yuji is being held by Tsunade in her arm as she flickers through the rooftops of Konoha.

'That's quite the speed!'

He looks around in amazement.

'Her speed is easily around 150-170 mph. And she isn't even using the body flicker technique. With the body flicker technique that speed can reach up to 600-700 mph for a short period. This speed is almost approaching the speed of sound. One can certainly achieve miraculous feats with the aid of chakra.'

His early burst of speed might look similar to the body flicker technique, but it wasn't. It was a trick that he used to achieve a similar feat. The physics of walking follow Newton's Third Law of Motion. To move forward, a person applies some force on the ground. The ground, in turn, applies a reactive force on the feet, which pushes it forward. He coated the sole of his feet with chakra to protect and strengthen it, and then, he pressed the ground with a powerful force at an optimal angle to get the maximum reactive force to push him forward. There was no release of chakra outside his body.

This momentary burst of speed is similar to tossing an object in the air. The object will gain a certain height, after which it will lose its momentum and fall to the ground.

However, the principle behind the body flicker technique is entirely different since it involves chakra. In the body flicker technique, the user circulates the chakra through the chakra pathway system in the leg. After completing a few cycles, they eject the circulated chakra from their tenketsu points to get a burst of speed.

This is similar to the propulsion system of an aircraft. Here, the chakra is the fuel and the tenketsu points are the exhaust nozzle that accelerates the body through thrust. The speed of the user depends on the burden their tenketsu point can handle.

Yuji is lost in his thoughts as they arrive at the Hokage Office.

"We are here!" Gojo takes his leave after reaching the Hokage Office.

Tsunade, who was silent the entire time, turns her attention to Yuji.

"Kid… you sure like to get in trouble."

"But I can't let others bully my friend and family. That guy was abusing his power to harm Kushina. He even used a lethal weapon to attack her." Yuji replies to her.

"Hmm… I can understand your sentiments, but you overdid it, just like the previous time."

"You know it!"

"Of course! I am shinobi. Gathering intelligence is also a part of shinobi's job." Tsunade smiles slightly.

"Well… back then, I just wanted to protect Hana and myself from the bullies. So, I used my entire strength to punch him. I didn't expect it to break his spine." He answers with an innocent face.

"And what about now?" Tsunade raises her eyebrow.

"You have been training to control your chakra and body with us for a while. So, there shouldn't be any miscalculation in the necessary strength required to incapacitate him without hurting him to such an extent."

"It's my fault. I didn't expect my new technique to deal with such kind of damage." Yuji admits his fault.

"Hmm… just what kind of technique did you use, brat?" Tsunade asks him.

Yuji infuses his dense black chakra into his fist. The muscles in his fists twitch and squirm as he continues to infuse more chakra in his fist. He continues to pour more chakra into his fist. Some black lines appear along his fingers. The tips of his knuckles turn slightly black.

Crackle… crackle…

Crackling noises ring from Yuji's fist as he barely holds the dense amount of chakra.

Hmm…

Tsunade inspects his hand and slightly taps the black spots on his knuckles and fingers.

'This is definitely the chakra enhancement technique I taught him. However, it seems like his body has a high tolerance limit. So, he can infuse far more chakra than normal. Also, his chakra is slightly unique compared to others…'