Naruto: Mikoto and Tsunade, don't let either of them go.

Uchiha Kakuzan reached out and pressed the spot where he had been stabbed. He felt no pain at all. He then walked back and forth a few steps without any adverse effects.

This is Hashirama Senju's famous "no-seal healing," where he directly heals his wounds with his immense life force. Even Madara Uchiha said that no one could kill Hashirama Senju on the battlefield. The most terrifying thing is that even after Hashirama Senju died, his cells were still alive and maintained astonishing vitality and aggression.

Even after Madara Uchiha transplanted Hashirama Senju's cells, Hashirama's face grew on his chest, just like the saying goes—if you love someone, tattoo their image on your chest. Madara Uchiha did just that perfectly.

Meanwhile, Tsunade watched Uchiha Kakuzan's experiment closely. As the experiment progressed, her emotions grew stronger, and she had to bite her red lips tightly to suppress her excitement.

Chapter 153 Tsunade's Excitement

Chapter 153 Tsunade's Excitement

After testing the healing ability without seals, Uchiha Kakuyama nodded in satisfaction. With this ability, as long as he didn't actively seek death, it would be completely impossible for enemies to kill him.

This was also Hashirama Senju's greatest reliance back then; otherwise, when he was locked in a fierce battle with Madara Uchiha, the outcome would have been uncertain.

Just then, Uchiha Kakuzan suddenly saw Tsunade looking at him. As if he had found a buddy to brag to, Uchiha Kakuzan called out to Tsunade, "Tsunade-nee, come here quickly, I'll show you something fun."

Tsunade took a deep breath, suppressing her inner turmoil, and strolled over to Uchiha Kagami's side, leaning her face closer as if to ask, "What's so fun about it?"

Uchiha Kakuzan was momentarily stunned by Tsunade's beautiful face so close to his own, and quickly looked away. But then his eyes fell into a deep chasm.

Uchiha Kakuyama coughed lightly, turned his head to the side to hide his panic, and quickly changed the subject: "Tsunade-nee, I'll perform a show for you that we haven't seen in a long time. If you like it, give me a kiss."

Tsunade could easily see Uchiha Kakuzan's panic, but she didn't expose him, and besides, she didn't mind.

Looking at the clownish Uchiha Kagami, Tsunade nodded with a smile: "As long as you perform well, I will definitely give you a chance."

Having received Tsunade's response, Uchiha Kakuyama took two steps forward, facing a large open space, and formed a hand seal that Tsunade was very familiar with.

"Wood Release - Advent of the Tree World"

As Uchiha Kagami formed hand seals, the ground in front of him immediately bulged up, and dense branches sprouted from it, growing rapidly and tall. These trees formed an impenetrable forest in a very short time, far surpassing Yamato in size.

Although Tsunade had a premonition of the ninjutsu that Uchiha Kakuzan was going to use, she was still deeply shocked when Uchiha Kakuzan used Wood Release: Advent of a World of Trees. The effect and power of this Wood Release were exactly the same as those used by her grandfather, Senju Hashirama, which made Tsunade feel like it was all a dream.

Tsunade covered her mouth tightly with her right hand, but tears still blurred her vision. Her eyes remained fixed on the scene before her, unblinking. This was her grandfather's signature ninjutsu. Although Hashirama Senju possessed other powerful Wood Release techniques, his most frequently used ninjutsu was still this Advent of a World of Trees.

Because Advent of the World of Trees is a control-type ninjutsu, the kind-hearted Hashirama Senju couldn't bear to kill them with a mere gesture, so he used this ninjutsu to both stop them and avoid harming them.

As Tsunade looked at the forest formed by the birth of the Tree World, it was as if she saw her great-grandfather laughing heartily there, which gave Tsunade a dazed feeling.

Looking at the sea of ​​trees before him, Uchiha Kakuyama nodded in satisfaction. He was very pleased with the power of this ninjutsu; he finally possessed the authentic Wood Release ninjutsu, and the power that Hashirama Senju once had.

Turning to Tsunade, Uchiha Kakuyama said somewhat smugly, "Tsunade-neechan, how about it? Aren't you surprised?"

Tsunade looked at the young man in front of her, her expression somewhat dazed. After all, he possessed the signature skill that her grandfather had once possessed.

Tsunade could no longer restrain herself and nestled into Uchiha Kakuyama's arms like a swallow returning to its nest. Then, she passionately offered her red lips, her breath coming in short gasps.

When Uchiha Kazuyama was faced with Tsunade throwing herself into his arms, he was also stunned for a moment. He did not expect that Tsunade would be so proactive. However, Uchiha Kazuyama was stunned for less than a second before he immediately responded to the enthusiastic Tsunade.

Uchiha Kakuzan and Tsunade were both so selfless, like moths to a flame, regarding each other as their ultimate faith, passionate and devout, earnest and selfless.

Gradually, Uchiha Kakuyama lost control of himself and hugged Tsunade tightly in his arms, holding her even tighter.

Just as the two were kissing for a long time and about to lose control, Uchiha Kakuyama was the first to come to his senses and realize that the environment was not suitable, after all, it was his and Tsunade's first time.

With a thought, Uchiha Kakuyama instantly teleported to his room in the villa while carrying Tsunade.

Tsunade was also very sensitive to the rapidly changing environment. She opened her eyes, glanced at her surroundings, looked at Uchiha Kakuyama, and then went back into the activity.

Tsunade possesses abundant resources and the bloodline of the Senju clan, while Uchiha Kakuzan has just acquired the Sage Body and possesses immense vitality. This leads to the two meeting a formidable opponent.

In the end, Tsunade was no match for Uchiha Kagami's Sage Body and couldn't hold out until the very end, finally surrendering to Kagami.

Finally, the war ended, Tsunade surrendered, and Uchiha Kagami won by sheer luck. The real victory or defeat would be decided in the next war.

As the storm subsided, Uchiha Kakuzan was very satisfied with his victory, carefully savoring his spoils.

Tsunade also came to her senses from her impulsiveness. She knew in her heart that sooner or later she would not be able to escape Uchiha Kakuyama's grasp.

However, she also wanted to get to know each other better first and cultivate their relationship so that she could accept it later.

Tsunade hadn't expected to surrender so quickly. She was somewhat agitated because she had seen her grandfather Hashirama Senju's Wood Release again.

Originally, when faced with Uchiha Kakuyama's request for a kiss, she only intended to give him a small reward. Unexpectedly, as she continued to reward him, she ended up rewarding herself as well.

Just as Tsunade finished thinking about these things, Uchiha Kagami, due to his extremely strong vitality, recovered and said somewhat apologetically, "Tsunade-neechan, I'm troubling you again."

Faced with this guy with abnormal vitality, Tsunade sighed helplessly and leaned against him.

Chapter 154 The Upgrade of Susanoo

Chapter 154 The Upgrade of Susanoo

When Tsunade emerged from the spatial dimension and tiptoed back to her room, it was already dawn.

In fact, when Uchiha Kagakuyama finished copying the Senju clan bloodline from Tsunade and fused it to obtain the Sage Body, it was just past midnight.

If Tsunade had returned at that time, she could have gotten a good night's sleep without it interfering with her plans for the next day.

However, after Uchiha Kakuzan obtained the Sage Body with Tsunade's help, both of them were very excited and did some things they couldn't help themselves.

In addition, both of them have superhuman physical abilities, and Uchiha Kakuzan even possesses the Sage Body. Even if he fought for three days and three nights, he probably wouldn't get tired.

Therefore, the two were evenly matched and fought fiercely, and later they fought many more times. If Tsunade hadn't been worried about not being able to explain things clearly to Shizune and hadn't reluctantly returned, the two of them would not know when they would have been able to come out of the space.

When Tsunade quietly entered the room, she indeed found Shizune sleeping on her desk.

Tsunade didn't dare to disturb her, and quietly went to the bedside and slipped into the covers.

Just then, Shizune groggily raised her head and looked at Tsunade, who had just crawled into bed: "Hmm, Lady Tsunade, you're back?"

Tsunade's heart jumped the moment Shizune woke up. Hearing Shizune's words, she pretended to have just been woken up and said impatiently, "I've been back for a while, but I didn't want to disturb you since you were sleeping so soundly. Go back to sleep."

Upon hearing Tsunade's words, Shizune paused, her hand rubbing her eyes. She had woken up countless times throughout the night, only to find the bed empty. How could Lady Tsunade have returned so long ago?

Shizune opened her mouth but didn't say anything. She had long understood Tsunade's personality and knew that if she exposed her now, she would be the one who suffered. So she swallowed the words in her mouth.

Shizune felt relieved when Tsunade returned. After greeting Tsunade, she went back to rest. Although Shizune was curious about where Lady Tsunade had gone that night, she knew that if she asked, she would be in big trouble.

After Shizune left, Tsunade finally felt relieved, knowing she had gotten away with it.

Thinking of this, Tsunade gritted her teeth and muttered, "Damn Uchiha Kakuyama, tell him to hurry up, tell him to hurry up, he just won't finish quickly, he almost made me lose face."

After muttering to herself, Tsunade felt waves of drowsiness wash over her. Indeed, she hadn't slept a wink all night. First, she helped Uchiha Kakuyama complete his transformation into a Sage Body, and then she fought with him for half the night. Although Tsunade was physically capable, she couldn't withstand Uchiha Kakuyama's relentless energy. So, after lying down in bed, Tsunade soon fell into a deep sleep.

Meanwhile, Uchiha Kakuzan was enthusiastically experimenting with his Sage Body in the space. You see, the night before, when he first obtained the Sage Body, Uchiha Kakuzan hadn't even had a chance to properly experience it before being drawn in by Tsunade to do some things, and had been busy all night.

Uchiha Kakuzan only had time to study the Sage Body and its relationship with the Eternal Mangekyou Sharingan after sending Tsunade away.

In Naruto, only a handful of people possess the Sage Body: the Sage of Six Paths, his youngest son Ashura, and Hashirama Senju.

The reason why Hashirama Senju was able to contend with Madara Uchiha, who possessed the Eternal Mangekyou Sharingan, was because of his Sage Body.

The Sage Body is different from the Sharingan. The Sharingan has a clear upgrade path: one tomoe, two tomoe, three tomoe, Mangekyou Sharingan, and Eternal Mangekyou Sharingan. It is possible to make the Sharingan reach the level that Indra, the eldest son of the Sage of Six Paths, possessed through certain methods—the Eternal Mangekyou Sharingan.

The Sage Body is possessed only by Ashura and Hashirama Senju, with Hashirama possessing it because he was the reincarnation of Ashura.

That's why the Sage Body is so rare, while so many people want to obtain its power. Without exception, anyone who obtains a portion of the Sage Body has the image of Hashirama Senju on their body, which illustrates the domineering and aggressive nature of the Sage Body.

Uchiha Kakuzan also upgraded his physical body to Sage Mode by copying Yamato's Wood Release, the bloodlines of the Uzumaki clan and the Senju clan.

At this moment, Uchiha Kakuzan was reviewing the system notifications from yesterday. Because there was something important yesterday, and it had reached a crucial point, Uchiha Kakuzan chose to ignore the system notifications and follow his heart completely. After all, that was his dream girl—the magnanimous Tsunade. Who wouldn't be confused when they met her?

"Congratulations, host. Testing has revealed that due to your acquisition of the Sage Body, your Eternal Mangekyou Sharingan has been nurtured and strengthened, resulting in enhanced evolution. Your Eternal Mangekyou Sharingan has now reached its peak."

"Congratulations, host. Your Eternal Mangekyou Sharingan has evolved to its peak. The Sharingan's power has doubled, your mental strength has doubled, and the cooldown time of your eye techniques has been reduced by half."

"Congratulations, host! Due to your acquisition of the Sage Body and the evolution of your Sharingan to its peak, these two factors complement each other, granting you a new reward—the power of God, Susanoo, has broken through to the highest level, reaching the fifth stage—Dharma of Heaven and Earth: based on the fourth stage Susanoo, it has received a tenfold increase, allowing Susanoo to reach an unprecedented level."

Uchiha Kakuzan was astonished when he saw the system's notification. He hadn't expected that the Sage Body and the Eternal Mangekyou Sharingan would come together to unleash such powerful energy.

This is ten times the size of a normal Susanoo, meaning its height alone is already comparable to the height of the Sage Art: Wood Release: True Several Thousand Hands once used by Hashirama Senju.

This height is comparable to that of the Ten-Tails. When capturing the Nine-Tails, it's like catching a chick; one wrong move and you might accidentally crush the Nine-Tails to death.

In this way, Uchiha Kakuzan would have the ability to contend with the Ten-Tails. At that time, even if Uchiha Obito summoned the Gedo Mazo, he would be beaten to a pulp by Uchiha Kakuzan.

Just then, Uchiha Kakuyama had a sudden thought and asked, "System, when will my Sharingan be able to upgrade to the Rinnegan?"

Chapter 155 How to Awaken the Rinnegan

Chapter 155 How to Awaken the Rinnegan

Uchiha Kakuyama asked, "System, when will my Eternal Mangekyou Sharingan be able to upgrade to the Rinnegan?"

"Returning to the host, because the host lacks the necessary conditions to upgrade the Rinnegan, the host's Eternal Mangekyou Sharingan cannot be upgraded to the Rinnegan."

Uchiha Kakuzan was greatly surprised to hear the system's words, because in his memory, Uchiha Madara had used a piece of Senju Hashirama's flesh and blood to fuse into his own body, which allowed him to awaken the Rinnegan when he was about to die of old age. He then gave his Rinnegan to Nagato, who had the Uzumaki bloodline, and also trained Uchiha Obito to prepare for his later resurrection.

That's why Uchiha Kakuzan was so surprised, because he felt that he already had the same conditions as Uchiha Madara, and he also possessed the complete Sage Body, so he should have awakened faster than Uchiha Madara.

In response to Uchiha Kakuzan's question, the system provided him with a detailed answer:

"Back to the host, because Madara Uchiha was the reincarnation of Indra and possessed Indra's chakra, while Hashirama Senju was the reincarnation of Ashura, when Madara Uchiha transplanted Hashirama Senju's flesh and blood, it was equivalent to possessing the chakra of both Indra and Ashura at the same time. This is why it took him several decades to awaken the most basic Rinnegan."

Uchiha Kakuzan stroked his chin. He really hadn't expected that Uchiha Madara and Senju Hashirama's identities were so complicated, and that the condition for awakening the Rinnegan was to possess the chakra of both Indra and Ashura at the same time.

When in doubt, Uchiha Kakuzan asked the system, "Why is it that only by possessing the chakra of both Indra and Ashura can one awaken the Rinnegan?"

"Returning to the host, because Indra and Ashura are the sons of the Sage of Six Paths, they respectively inherited the Sage's Sage Eyes and Sage Body, which are the origins of chakra: Yin-attribute chakra and Yang-attribute chakra. Only by possessing both simultaneously, and merging them to form the power of all things, can one awaken the Rinnegan."

Uchiha Kakuzan hadn't expected awakening the Rinnegan to be so troublesome, and asked somewhat impatiently, "This is too troublesome, is there any other way?"

"There are five methods, from easy to difficult, for the host to choose from":

"First, the host will acquire the chakra of Indra and Ashura, and with the system's assistance in catalyzing this process, the Rinnegan is expected to awaken within two years."

"Second, gather the chakra of all nine tailed beasts, and the system will assist the host in fusing them. It is estimated that the Rinnegan can be awakened in three years."

"Third, capture Nagato, the owner of the Rinnegan. The host will then copy and learn the Rinnegan's eye techniques, and the system will catalyze and integrate them. It is estimated that the Rinnegan can be awakened in three years."

"Fourth, gather all the tailed beasts, use the Gedo Mazo to absorb the nine tailed beasts, revive the Ten-Tails, become the Ten-Tails' jinchūriki, and the host will also obtain the Rinnegan."

"Fifth, sow a single grain in spring, reap ten thousand in autumn. Plant a divine tree in the ninja world, obtain its fruit, and the host can directly obtain the Nine-Tomoe Rinnegan by consuming it."

Looking at the methods listed by the system, Uchiha Kakuyama's lips twitched violently. The first two were manageable with his strength, but the last two were just too much.

It's either about starting the Fourth Shinobi World War or completely annihilating the planet. Especially the latter, even if Uchiha Kakuyama could do it, by then, everyone on the planet would be dead. Are you suggesting that Uchiha Kakuyama go and play with the Otsutsuki clan?

In fact, Uchiha Kakuzan's current strength is already at the pinnacle of the ninja world. Even if Uchiha Madara were to be resurrected, he would be unable to do anything about it. If Uchiha Kakuzan were willing, Uchiha Madara and Uchiha Obito would never be able to gather the tailed beasts, revive the Ten-Tails, and then activate the Infinite Tsukuyomi.

Putting aside Uchiha Kakuzan's strength, just the fact that he could simply capture the Three-Tails and throw it into his dimension would solve the problem once and for all, preventing the nine tailed beasts from ever being gathered together again.

However, Uchiha Kakuzan couldn't do that, because he had to consider the future.

In another twenty years or so, the Otsutsuki clan might find their way to this planet. If Uchiha Kakuzan's strength stagnates, how will he defend against the enemy's invasion? Moreover, there is actually an Otsutsuki hiding in the ninja world right now. However, as long as he doesn't cause trouble, Uchiha Kakuzan doesn't plan to bother him for now.

Of the various methods to awaken the Rinnegan, the first one is the simplest, because he has the reincarnations of Indra and Ashura readily available by his side: Uchiha Sasuke and Uzumaki Naruto. Coincidentally, Uchiha Okayama's eye technique—the Copying Eye—allows him to copy bloodline limit replacements and chakra similar to Indra and Ashura after his Mangekyou Sharingan is upgraded to the Eternal Mangekyou Sharingan.

In other words, Uchiha Kakuzan already knew about the reincarnations of Indra and Ashura in advance; otherwise, where would you find their reincarnations in the vast sea of ​​people?

When they become famous, even if you know they are the reincarnations of Indra and Asura, with their power, you won't be able to control them anymore.

In fact, it was only with the help of the system that his Sharingan was able to evolve into the Rinnegan in just two years. If Madara Uchiha knew this, he would be extremely envious, since he had spent decades fusing with the Rinnegan and only awakened it in his later years.

However, Uchiha Kakuzan wasn't in a hurry. After all, he had just gotten Tsunade and was already busy with other things. He would not only be letting Tsunade down, but he would also be letting himself down. Besides, he had promised Tsunade that he would help her continue the Senju clan's bloodline. How could he go back on his promise?

Uchiha Kakuyama stated that he was simply helping out and was absolutely not after Tsunade's beauty.

After deciding on his future direction, Uchiha Kakuzan went to rest with peace of mind. After all, he had worked hard all night. Although he was now a Sage Body, he was still a little tired. Only by resting well could he perform better in the battle that night.

So, on this day, only Shizune was bored and wandering around the house, while Uchiha Kagami and Tsunade were catching up on sleep in their respective lodgings and private spaces.

As night fell, and Tsunade had rested, Uchiha Kagami appeared before Tsunade and Shizune right on time.

Of course, since it was already evening, Uchiha Kakuyama, Tsunade, and the others did not go to the casino, but instead went to a tavern for a drink.

Chapter 156 The Abnormalities of Takamagahara

Chapter 156 The Abnormalities of Takamagahara

Tanzaku Town truly lives up to its reputation as a famous consumption destination in the Land of Fire, with casinos, taverns, bathhouses, and other entertainment venues galore, making Tanzaku Town quite lively at night.

After having a few drinks at a tavern, Uchiha Okayama, Tsunade, and the others strolled along the brightly lit streets of Tanabata.

In fact, Tsunade had visited the Tanabata Street night market countless times, but this time, with Uchiha Kakuzan by her side, it was a different experience altogether. In the past, even with Shizune by her side, she still felt somewhat lonely, but now with Uchiha Kakuzan by her side, she felt much more comfortable than before, and even the smile on her face was much brighter than before.

When night fell and all was quiet, and Shizune returned to her room to rest, Tsunade did not need Uchiha Kagami to summon her. After leaving a shadow clone in her room, Tsunade activated the spatial mark on her chest and entered the spatial island.

Tsunade looked around, then looked at Uchiha Kakuyama, who was waiting beside her, with some confusion: "Am I just imagining things? Why does it feel like your island has gotten bigger?"

Uchiha Kakuzan smiled at Tsunade, his eyes filled with affection: "You're not mistaken, this island is more than twice the size of the one you visited last time. With its current size, it could easily accommodate 20,000 people."

Tsunade was surprised to hear Uchiha Kakuzan's words: "Can your island really expand on its own?"

Uchiha Kakuyama nodded, his tone carrying a strange meaning: "Yes, when I first awakened the 'Takamagahara' eye technique, the island's area was actually only one-tenth of what it is now, barely enough for the residents of a small town to live on."