Raising Her from Childhood

Under the illumination of the Sun Attribute flames, the ice pillar gradually melted, revealing the Reishi buried within.

The moment the Reishi appeared, it intended to transform into nourishment for the world, just as it had in the World of the Living realm, but it only trembled for a moment and then remained unchanged.

This is the power of the Sky Flame, which allows this space to encompass the existence of this Reishi.

A bead of sweat slid down Tsuna's forehead. In order not to harm the Reishi, Tsuna was concentrating on releasing the power of the Sun Attribute little by little.

Compared to the drain on spiritual pressure, the mental drain is far greater. After all, Hisana's memories are stored in just this one Reishi, and if she makes even the slightest mistake, Tsuna won't know how to face Byakuya.

"Very good, proceed to the second step. Switch to the Storm Attribute flame and use the power of decomposition to extract the different memories from the Reishi," the Decimo said.

This Reishi originated from the Thought Bead. The memories on it are not just Hisana's; there are other memories mixed in as well. Hisana's memories must be extracted separately.

Tsuna switched to his Storm Attribute power, and the Skull Sprayer aimed at the Reishi, unleashing flames the size of his little finger. His right hand rested on the Skull Sprayer, afraid that he might accidentally disintegrate the Reishi completely.

Under the scorching heat of the Storm Attribute flames, cracks appeared on the Reishi. These were the marks left by the forced aggregation of different memories, and these marks were the first to show signs of damage under the influence of the decomposing force.

Gradually, the Reishi was broken down into even smaller energies. As the one who came into direct contact with it, Tsuna saw a series of different scenes before his eyes: people, landscapes, fights, and celebratory events...

"Many memories are flashing before my eyes," Tsuna said quickly.

"Switch to fog attribute, project all the memories you see, Byakuya, get ready!" The Decimo's tone became even faster, issuing the order forcefully.

Tsuna moved with lightning speed. The moment the Skull Sprayer switched to Trident, he planted the Trident on the ground, and a series of memories appeared before everyone's eyes.

The characteristic of the Mist attribute is construction; Tsuna can make others see what he wants them to see, and this is the constructed illusion.

"That one in the middle, that's where I first met Hisana!"

Byakuya pointed to the image in the middle without hesitation. The scene was nothing special: dilapidated streets, old wooden houses, and not even a single character or scene that could be considered distinctive.

But Byakuya recognized her immediately; she was the Hisana he had met in Rukongai. It was at that moment that he decided to give her the surname Kuchiki.

"Envelop it in Lightning Attribute, making it an independent Reishi!"

The Trident transformed into bull horns, Tsuna drew a line across the horns, his lightning-cracking fingers pointing directly at the memory Byakuya had indicated.

The characteristic of the Lightning Attribute is Hardening. Under the guidance of the Decimo, Tsuna used lightning as a shell to re-encase his memories. The memories, which were already somewhat scattered, were transformed back into Reishi particles under the hard shell.

However, this Reishi is only a fraction of the original. It can only be said that its structure is very similar to Reishi, but it contains too little energy to be considered a Reishi at all.

Upon seeing this, Kurotsuchi Mayuri frowned. The Decimo's plan was indeed brilliant, as it was able to precisely separate the memories belonging to Hisana Kuchiki.

But these Reishi are so small that they're difficult to modify, let alone detect with instruments. How can you Modified Soul with that?

Urahara smiled slightly. Seeing Kurotsuchi Mayuri's subtle expression, he had already completely guessed Kurotsuchi Mayuri's thoughts. This was good, as it proved that Kurotsuchi Mayuri would definitely complete this experiment seriously.

"Next comes the proliferation of clouds, right?" Urahara reminded him with a smile, seeing through the slight anxiety in Kurotsuchi Mayuri's heart.

Kurotsuchi Mayuri did not directly participate in the battle between Tsuna and Genryūsai Shigekuni Yamamoto, so he couldn't initially connect it to the power of the Cloud Attribute, which is why he was worried about the lack of experimental materials.

"That's right, Tsuna multiplied the Reishi to a number sufficient to construct a normal soul," the Decimo affirmed.

The bull horns transformed into two Floating Cloud Tonfas, which Tsuna held in his hands. He directly touched the tiny Reishi with the Floating Cloud Tonfas, Cloud Attribute flames poured directly into Reishi.

With its hardened Lightning Attribute shell, the Reishi is no longer as fragile as before, allowing Cloud Attribute flames to burn directly.

Bathed in Cloud Attribute flames, the number of Reishi rapidly increased, soon growing to the size of a palm.

"That's about it. Tsuna, use your Sky Flame to blend it into a true Reishi."

Because the Decimo's flames are still maintaining the stability of this space and Reishi, and for these fragile Reishi to merge into true Reishi, Sky Flame of a different frequency than the Decimo's current flames is needed.

The Floating Cloud Tonfas switched to the X-glove, Tsuna hugged the pile of Reishi, releasing a stronger Flame Pressure than the Decimo was currently using.

The Decimo's Sky Flame is for stabilizing Reishi, while Tsuna's goal is fusion, so his Flame Pressure intensity will be higher.

Visible orange flames enveloped the Reishi, and these spheres, which were only a fraction of the normal Reishi, began to converge and merge into true Reishi.

After a while, Tsuna was breathing heavily, his whole body was soaked in sweat, the brilliance of the Sky Flame dissipated, and what Tsuna held in his hands was the Reishi that belonged only to Hisana.

"It worked?" Byakuya walked to Tsuna's side, unable to believe it. He felt the distinct Hisana of Reishi and wanted to reach out and touch it, but he was afraid of affecting the subsequent process.

"I have fulfilled my mission." Tsuna sat down heavily, the mental strain on him was no less than experiencing a battle Beyond Bankai.

"Thank you both. Byakuya will certainly repay you handsomely," Byakuya said earnestly.

"Don't rush to tell me what will happen later, Captain Kurotsuchi. I wonder if these Reishi will be able to complete the experiment?" the Decimo asked Kurotsuchi Mayuri.

"Hmph, Nemu, bring them here."

With a blank expression, Nemu Kurotsuchi placed the created Reishi into the device. To avoid any accidents, she also kept two backups so that Tsuna could continue to multiply them later.

After a series of operations that non-researchers couldn't understand, a small red pill, exactly like the one used to Modified Soul, appeared on an empty plate. Nemu Kurotsuchi handed the plate to Urahara Kisuke.

Before Urahara Kisuke was an artificial soul the size of an arm. "Generally speaking, artificial souls have no thoughts; they are like newborn babies who need to be nurtured."

"However, this time we used Modified Soul technology. Captain Nie added some new technologies, and the memories of the Modified Soul will be stored in the soul's brain as soon as they enter the artificial soul's body."

"Captain Kuchiki, it's safe to say that reaching this point is essentially a success."

Urahara placed the Modified Soul between the eyebrows of the artificial soul, and the Modified Soul immediately transformed into a pure memory that merged into the artificial soul's body.

Byakuya walked happily to Urahara's side. As the memories were injected into the Modified Soul, a baby girl who looked somewhat like Hisana appeared before him.

"Manager, is this some kind of resurrection jutsu?" Tsuna asked curiously.

"No, Reishi particles have a lifespan. Mrs. Kuchiki's death was an unnatural one. Not to mention that Captain Ne and I would spend a lot of time creating another artificial soul, Tsuna, are you willing to repeat the same actions for a stranger?"

"Forget it, one time is enough. I just want to sleep." Tsuna waved his hand and lay down on the ground without any regard for appearances.

This so-called resurrection requires the techniques of Kurotsuchi Mayuri and Urahara Kisuke, as Tsuna's Sky Attribute flames—all are indispensable.

"Captain Kuchiki, I need to inform you about Madam's matter."

Upon hearing Urahara's words, Byakuya immediately looked away, staring at Urahara with a serious expression, much like a caregiver for a patient. "Please speak."

"I've investigated. Previously, the lady's spirit was relatively weak. She often stayed in Seireitei and the Kuchiki Clan. Her body was damaged by the spiritual pressure of Captain-level spirit."

"Within this soul, Captain Nie and I adjusted its strength, and she can grow to be as powerful as Vice-Captain Nemu Kurotsuchi."

"It is precisely because of these added technologies that we did not have time to expand our souls to adult size, so your wife had to be nurtured from a young age."

"No, that's nothing. I have plenty of time to wait for her to grow up," Byakuya said excitedly. "I missed her past life, so I'll make up for it now."

Training his wife from a young age is really no problem for Byakuya. With his Captain-level strength, living for several hundred years is not an issue at all.

"That's good. I suggest you buy some parenting books to brush up on your knowledge. By the way, although it's an artificial soul, Madam's body is no different from a normal person's, and she can give birth normally."

The last sentence was Urahara's key point. Byakuya immediately grasped Urahara Kisuke's hands, indicating that Urahara and Kurotsuchi Mayuri could ask the Kuchiki Clan for help anytime they needed research funding.

Urahara also wore a satisfied smile. After going through all this trouble, Urahara's ultimate goal was still the Kuchiki Clan's purse.

While Byakuya was expressing his gratitude, Rukia had already moved closer to the newborn. She looked curiously at the baby with lanugo the same color as her own, wondering whether she should call her older sister, sister-in-law, or younger sister.

Seemingly awakened by Urahara and Byakuya's voices, Hisana's eyes trembled, and she made a whimpering sound.

Byakuya, who was always watching over Hisana, didn't need Rukia's reminder. He appeared beside her in a Flash Step and watched as she opened her eyes with some difficulty, her gaze still so gentle.

"Haku... ya...-sama..."

Hisana to reach out and grasp Byakuya's fingers, but she couldn't. As a newborn, she had only uttered four words when she felt a deep sleepiness wash over her, and she drifted off to sleep with just a slight twitch of her fingers.

Byakuya's joy and excitement turned into ecstasy. The fact that he could utter those four words proved that the baby girl in front of him was the wife he had been longing for. Hisana Kuchiki had returned!

Byakuya could only cover his face with his hands; the awkwardness of wanting to laugh but being afraid to make a sound distorted his expression.

Rukia stared blankly at her older brother, already able to picture the cold-faced nobleman of Seireitei carrying a baby everywhere he went.

In the past, Byakuya might have been prevented from doing anything that would bring shame to the Kuchiki Clan rules and honor.

But now that Byakuya is the head of the family, his longing for Hisana over the years allows him to overcome all obstacles. Even if the entire Seireitei laughs at him, Byakuya will definitely keep Hisana by his side at all times.