Mizuki looked worried as he carved the seal formation while watching Uchiha Sasuke and Uzumaki Naruto still fighting. So far, no one had come to disturb them. However, as the fighting and the noise gradually faded away, Mizuki's uneasiness became more and more serious.

Suddenly, a sharp pain came over him, which turned Mizuki's originally stable thoughts into a mess. Mizuki, who was stunned by the shock, stopped moving, and the kunai in his hand fell to the ground with a clang.

"What's wrong, Teacher Mizuki?" The sudden change startled Sasuke and Naruto.

Shuimu did not answer the two people's questions. Instead, he staggered to his feet, leaned against the railing with his back, and carefully sorted out the memories that had just come to his mind.

"Is he already dead? The first fake Jinchūriki, Uchiha Itachi? This is what it felt like to be burned by Amaterasu. It's such a painful memory..."

When Mizuki sent a fake Jinchuriki clone to intervene in a fight of Uchiha Itachi's level, he had a premonition that he might not be able to come back. However, he was burned half to death by Amaterasu and then exploded to death. Except for the initial interference effect, it was almost useless.

"There's a gap in hard power, it still doesn't work. Many of my methods were directly crushed by my absolute strength..."

Mizuki couldn't help but feel unconvinced after such a disastrous defeat. Although it was a copycat Jinchuriki clone, the real body was gone, and even if it was in good condition, it probably wouldn't do much better. The key was that he lacked the means to enter the realm and reach the threshold of the strong. If he continued like this, he could only reach the level of Yuhi Kurenai and bully ninjas of Iruka and Ebisu's level.

"Sage Mode is the ticket to enter this world's high-end combat power. You must learn it as soon as possible."

Moreover, the Sage Mode also plays a positive role in Shuimu's current physical condition. The huge recovery ability in the Sage Mode will sort out the hidden dangers and hidden injuries in the body to a certain extent. Although it cannot directly increase vitality, it can also buy yourself a little more time.

"Teacher Mizuki, do we need to call a doctor?" Uzumaki Naruto asked. Uchiha Sasuke on the side also looked at this side with a worried look. A few days ago, after defeating Gaara, facing the sudden attack of Orochimaru, Mizuki's sealing technique and barrier technique left a deep impression on Sasuke. Even that time, Mizuki had never been so nervous, and the barrier he set up was obviously much more complicated than the last time.

Sasuke is different from Naruto's thick-skinned man. Mizuki's performance is completely the caution before encountering a terrible and powerful enemy. The pressure that comes in the face is definitely not inferior to the sense of crisis brought by Orochimaru.

"No need, Naruto." Mizuki shook his head, "Almost no one here has medical ninjutsu better than mine."

"Really?" Naruto looked at Mizuki suspiciously, as if he didn't quite believe Mizuki who was obviously bragging.

"Naruto, stop talking nonsense." Sasuke stopped Naruto from saying anything else. "Teacher Mizuki, are you okay?"

"Yeah, it's okay." After digesting the memory of the shocking experience of the fake Jinchūriki, Mizuki finally returned to normal.

Seeing that Mizuki was not seriously injured, Sasuke was relieved. If there was a really strong enemy, Sasuke and Naruto alone would not be enough.

"Is there anything we can do to help?"

"Yeah, there really is." Mizuki thought for a while and then said, "Naruto, you sit on the array pattern over there and start refining chakra and infusing it into the magic circle below; Sasuke, you protect Naruto, and be careful, don't let anyone get close before I let Naruto leave the magic circle. Listen carefully, I mean anyone..." Mizuki emphasized again for fear that Sasuke didn't understand.

"I understand." Uchiha Sasuke nodded solemnly.

"Hey, Mizuki-sensei, why don't you give me some combat missions instead of just sitting there? I don't want stupid Sasuke to protect me."

"Naruto..." Mizuki said to the petty Naruto, "I'm telling you the truth. If you don't do this step well, we may all die soon..."

Mizuki could barely inject the necessary chakra into the barrier, but in the face of the upcoming battle, Mizuki would be the main force, and the result of multitasking would definitely not be very good. It happened that Naruto was a helper, who helped in advance and saved Mizuki a lot of trouble.

Hearing Mizuki's serious words, the carefree Uzumaki Naruto was also frightened: "Everyone is going to die? No way?" The first time he experienced death was in the Land of Waves. Haku's death gave Naruto his first shock, and for the first time he realized that ninja is not just a game. Then there was the Chunin Exam, the death brought by war, which even the Third Hokage Sarutobi Hiruzen could not escape.

This time, when facing the serious topic of death again, even Naruto put away his joking thoughts.

"I understand, Mr. Mizuki..."

"Keep a good pace, don't be impatient, just do it slowly as usual." Shuimu ordered, "Don't worry about what's happening outside until I tell you to stop. I will protect you."

After getting the two Genins ready and Mizuki making the final preparations, all that was left was to wait for the enemy to arrive.

"I don't know who came here, but the only person who could do such a sneak attack is Uchiha Obito and Jue."

Just as Mizuki was waiting, a huge orange-red figure of a war god suddenly appeared in the distance where Jiraiya's summoning beast Gamahiro was confronting. The ferocious face of the god holding a giant sword, the enormous power and oppression were so great that Mizuki, who was watching from afar, felt like looking away unconsciously to avoid it.

"Susanoo? It's really amazing. Amaterasu has used it before. I don't know if Tsukuyomi is useful. Now, she is using Susanoo, a pupil technique that consumes vitality. She is using it so casually. She is really reckless. If she continues to use it at this pace, she will be blind in three years..."

Even though Uchiha Itachi's health is much better now than when he was terminally ill three years later, the pressure on his body is definitely not light due to the large amount of consumption of the Mangekyō Sharingan's pupil power and even his vitality in such a short period of time.

"What is that?" Uchiha Sasuke asked doubtfully, looking at the orange-red Susanoo in the distance, "How can there be such a thing? Is this still a ninjutsu?"

After hearing what Sasuke said, Mizuki asked in surprise: "You didn't know?"

"I've never seen anything like this. Are all the strong guys out there so powerful?" Sasuke said enviously.

"Okay, Sasuke, I can't explain too much to you now. You will know this kind of thing later..."

Sasuke, who has already opened the Sharingan, actually knew nothing about Susanoo, which was really beyond Mizuki's expectation. Logically speaking, although the Uchiha family was exterminated, they should have left behind a lot of things. As for things like the Mangekyō Sharingan, since Uchiha Madara, countless brilliant geniuses of the Uchiha family have failed at this stage. There should be no shortage of records about the unique eye technique of the Mangekyō Sharingan - Susanoo.

But it's better not to know. I can't tell Uchiha Sasuke too much of the inside story now. If he knew that Uchiha Itachi was back, I don't know what he would do driven by hatred. Let him wait here in peace for now.

Although Sasuke wanted to ask more questions about Mizuki's perfunctory words, he thought about it and held back. He must have known that Mizuki would not answer even if he asked.

The three people on the rooftop of the hospital just watched the battle in the distance which was obviously beyond the imagination of ordinary ninjas. Gamahiro's power was indeed strong, and with Jiraiya, he clearly had the upper hand. Although Uchiha Itachi's Susanoo was not weak either, it was not a complete Susanoo, and was not strong enough to fight one against two. If it weren't for Uchiha Obito and Zetsu who were eyeing him covetously on the side, making Jiraiya worried, he probably wouldn't have been able to hold out for long.

"Mr. Mizuki, do you think the lecherous sage will win?" Naruto looked at the fierce battle in the distance with concern.

"Win?" Mizuki smiled, "It's not that there are no people in this world who are stronger than Master Jiraiya, but at least the people on the opposite side don't have that strength for the time being."

Jiraiya's own strength is one aspect, and summoning techniques also account for a large part. When he was not very strong, summoning techniques allowed him to successfully pass the bottleneck period and protected him from dying halfway. Now, Jiraiya is still strong without summoning beasts, but if he wants to become a top strong man, Sage Mode and summoning beasts are indispensable. With these, Jiraiya has the confidence to not lose out when fighting one against three.

"Is the lustful sage so powerful?" It was impossible for Jiraiya to be worried about the terrifying sword-wielding warrior of Susanoo.

"Naruto, is your summoning technique still working? It's amazing that you defeated Gaara, isn't that strong enough?" Being able to defeat the One-Tail Jinchuriki who revealed his true form was not just a result of luck. Mizuki pointed at Gamahiro and said, "That double-sword toad over there is not much worse than the toad boss Bunta, so don't worry."

"Really?" Naruto said with a little relief, "As expected of Mr. Mizuki, you know so much."

"I only know what I need to know. Naruto, some things will become clear in due time."

"I don't understand what Mizuki-sensei means at all."

Naruto didn't quite understand what was said, but Sasuke seemed to understand something, but he didn't know what it meant exactly.

"Someone is coming, be careful..." Mizuki, who seemed to have sensed something, suddenly said to Naruto and Sasuke who were observing the battle situation in the distance.

Before he finished speaking, the door leading to the rooftop was pushed open, and then a familiar figure appeared in front of him.

"Teacher Iruka?" Seeing that it was an acquaintance, Naruto was the first to want to step forward and say hello. However, just as Naruto was about to move, Sasuke beside him grabbed his shoulder.

"Don't wander around."

"Sasuke, what are you doing?"

"Have you forgotten what teacher Mizuki told you?" Sasuke reminded.

"But, that's Iruka-sensei."

Sasuke shook his head, still not letting go of Naruto's hand.

"Naruto, Sasuke, so you are here. I didn't see you in the ward and thought something happened to you. I'm relieved to see that you are okay..." Iruka said as he walked over here with a smile.

However, Iruka failed to get closer as he wished, and was blocked by Uchiha Sasuke.

"What's wrong? Sasuke?" Iruka asked with a puzzled expression.

"That's right, Sasuke, get out of the way, that's Iruka-sensei."

"Iruka?" Mizuki on the side sneered and said, "You've also put a lot of effort into this?"

"Mizuki, what do you mean?" Iruka asked, putting away his smile.

"Even I know about it. It seems you have put in a lot of effort?" Mizuki waved his hand and a barrier bound Iruka in place, unable to move.

"Discovered? What a pity..." Iruka suddenly said an extremely incongruous hoarse voice. "I originally thought that by transferring the guards away, I could succeed without causing any trouble, but I didn't expect that there are still smart people watching the Nine-Tails Jinchuriki. This unexpected change is really annoying."

"What's going on? It's fake?" The sudden change surprised Naruto, and Sasuke, who had originally acted out of cautious suspicion, also breathed a sigh of relief.

"What an amazing disguise, but why did you have to be Iruka? There are so many acquaintances and strangers in the hospital, it's not easy for me to recognize them all, but Iruka? It would be strange if he could leave the ninja school at this time."

What Mizuki didn't mention was that the Transformation could imitate Iruka's aura and chakra so vividly that even a ninja like Mizuki, who had amazing chakra perception, couldn't tell if he was a clone of White Zetsu at close range. However, at this moment, anyone who approached Naruto without reason would be suspected by Mizuki. At this critical moment, it was better to be cautious. Even if he made a mistake, he could explain it later. So under Mizuki's pressure, the fake was exposed without much resistance.

However, even though he was exposed, the fake Iruka did not seem nervous: "In this case, I have no choice but to take the Nine-Tails Jinchuriki away by force. Fortunately, there are no masters here, not even a single Jonin, otherwise it would be really difficult..."

As soon as he finished speaking, more than a dozen ninjas with different faces quickly appeared around the rooftop. Most of them wore Konoha forehead protectors, and a few were even dressed like ordinary villagers. The one that caught Shuimu's attention the most was undoubtedly a strange figure wearing a one-eyed vortex mask.

"Is it Uchiha Obito? No, it's the real Obito."

One of the rare and extremely powerful clones of White Zetsu, I didn't expect him to appear here.

"I didn't expect it to be such a strong enemy, but it's better to say that no matter who is in the Akatsuki organization, they are all strong enemies to me."