Although Shiranui Mizuki, Yatsu Murasaki, and the others had previously sensed that there was a power within Yuu Mizuki that was completely different from demonic power or Taimanin particles, and they had heard Yuu Mizuki mention "Chakra" as a cultivation system distinct from magic and Taimanin particles...
They didn't actually know what specific abilities Yuu Mizuki, who cultivated Chakra, had mastered, or if it simply improved his physical strength, power, and speed.
At this moment, seeing Yuu Mizuki's hands forming seals rapidly, and then actually splitting off a clone that was almost identical to his main body, they couldn't help but exclaim in surprise, looking at Yuu Mizuki with eyes full of curiosity and inquiry.
Among Taimanin, it wasn't that there weren't people skilled in using clones. For example, Shiranui Mizuki, who awakened Water Style Ninjutsu, used to have the title "Phantom." She was good at using Water Style Ninjutsu to create many mirror image clones to confuse enemies.
But the clone Yuu Mizuki just created was completely solid. Not only did it possess the same power as the original, but even its aura was exactly the same!
"Onii-chan, can you teach me the clone technique you just used?"
"That clone technique actually has a physical body and looks no different from the real person. If I could use it to go to school for me or even complete daily training in the future, that would be absolutely perfect!"
Seeing Yuu Mizuki's Shadow Clone Jutsu, Shiranui and Yatsu Murasaki thought that if they could learn it, it would greatly reduce the risk during infiltration missions or when doing dangerous things in the future.
Yukikaze, on the other hand, thought about learning this Jutsu so she could let the clone attend classes and complete her daily Taimanin training for her.
"Using the Shadow Clone Jutsu is not without restrictions. I'm also not sure if one can learn this Jutsu without Chakra in their body."
"Even if you can learn it, it's best not to use this Jutsu recklessly!"
"As for wanting a clone to help you go to school, you should probably give up on that idea; it would be very easy to get exposed."
Yuu Mizuki glanced at Yukikaze, who had sneaked up to him at some point and was holding his arm with both hands while acting coquettishly. The corners of his mouth rose slightly in a helpless smile. He put the kunai back into the system backpack, raised his other hand, and gently poked Yukikaze's forehead with his index finger.
Perhaps it was because his transmigration to this world happened to save Auntie Shiranui from being ambushed and captured by monsters, preventing her from going missing.
Or perhaps it was because living in the Mizuki household with Auntie Shiranui and Yukikaze all these years, he had spoiled Yukikaze, his sister with whom he had no blood relation, too much, causing her to develop a strong dependence on him.
She didn't need to search for a missing mother, and at home, she had a considerate Onii-chan to help handle all the trivial matters of life. This also meant Yukikaze didn't have a deep obsession with training to become stronger.
Her current strength should be slightly weaker compared to the Yukikaze Mizuki in those Taimanin-themed adult works Yuu Mizuki had seen before transmigrating.
"A Shadow Clone possesses a physical entity, but it will disappear after receiving heavy damage, and it will return all injuries, as well as physical exhaustion and memories, to the main body."
"Theoretically, using Multiple Shadow Clones for training can increase the original training speed many times over, but after the Shadow Clones disappear, you will also experience the multiplied physical exhaustion and fatigue."
Moreover, compared to the S-rank forbidden Shadow Clone Jutsu in the Naruto world, the Shadow Clone Jutsu Yuu Mizuki obtained from the system was significantly different.
The clones he created were like emotionless puppets that would only rigidly execute orders.
After Yuu Mizuki clearly explained all the defects and drawbacks of the Shadow Clone Jutsu, he looked at Yukikaze, whose gaze was still burning—or rather, became even more fervent after learning that the Shadow Clone would feed back all training insights and memories to the main body upon disappearing—as well as Shiranui and Rinko.
Yuu Mizuki paused for two seconds, then continued, "If you want to learn, I can teach you the Chakra refinement method and the Shadow Clone Jutsu after this mission ends, but I can't guarantee that you will definitely be able to learn it."
Yuu Mizuki also wanted to try and see if the various Jutsu from Naruto could be learned by others. After all, according to the setting in the work of Naruto, although Chakra is defined as the product of the average mixture of spiritual energy and physical energy, its essence actually comes from the fruit of the God Tree.
Yuu Mizuki wasn't sure if the power he obtained through his cheat would have some differences from the Chakra in the Naruto world. Since Yukikaze and the others wanted to learn Ninjutsu, he might as well use this opportunity to see if they could learn it.
"Yuu-chan, besides the clone just now, have you mastered any other abilities?"
"If you want to subjugate monsters and demons with us, if you only have a clone ability like that, at most I can only let you work in logistics or complete some infiltration missions to gather intelligence!"
"Auntie Shiranui, if you want to know what other abilities I currently possess, then why don't you leave the remaining monsters in this abandoned hospital to me to deal with?"
Yuu Mizuki didn't answer Shiranui's question directly. He just smiled and turned to walk towards the depths of the hospital.
This abandoned hospital occupied a large area and was four stories high. Naturally, the demons and monsters hiding inside couldn't be just the few demons and tentacle monsters in that room earlier.
Previously, before Yuu Mizuki had time to act, the demons and tentacle monsters in the room were easily solved by Auntie Shiranui and Yatsu Murasaki.
Yuu Mizuki didn't want to continue being a bystander for the remaining monsters, letting Auntie Shiranui and Yatsu Murasaki take action.
These monsters and demons were all precious experience points for him!
"Oh my, I'm looking forward to your performance, Yuu-chan."
Shiranui Mizuki looked at Yuu Mizuki's back as he walked deeper into the abandoned hospital. A look of relief flashed deep in her eyes, and she couldn't help but smile.
At the same time, she cast her gaze on her daughter Yukikaze. Seeing her casual face, showing no vigilance despite being in a monster hideout, she couldn't help but frown slightly and scolded softly with a snort.
"Yukikaze, since you chose the same path as me to become a Taimanin, be a little more serious and cautious when performing missions. After Yuu-chan appeared, you seem to have become slack. Looking at you, it doesn't look like you can protect Little Yuu at all; instead, it looks like you're waiting for Little Yuu to protect you!"
"This was originally an assessment mission for you, so stop dazing there."
"If we encounter monsters later, let me see the success of your training from these past days!"
Being lectured by her mother, Yukikaze didn't dare to talk back casually. She could only agree and then silently caught up with her Onii-chan who was walking in front.
In Yukikaze's view, if Onii-chan was very strong, even more powerful than herself, then she didn't need to use her protection. Conversely, accepting Onii-chan's protection wouldn't be bad either, right?
Speaking of which, her poor self-care ability all these years was because Onii-chan spoiled her too much; he had almost raised her into a useless person.
Yukikaze had already decided that if she couldn't leave Onii-chan in the future, she would just directly marry Onii-chan and become his bride!
Anyway, the two of them didn't have any blood relation. Now knowing that Yuu Mizuki was not an ordinary person without power reduced many of Yukikaze's worries.
The only thing she wasn't sure about was her Onii-chan's thoughts.
After all, Yukikaze didn't know if her Onii-chan only had simple sibling affection for her, or if it was mixed with even a tiny bit of romantic feeling?
She always felt that her Onii-chan preferred mature women like her mother compared to her.
Mizuki Yukikaze looked down at her chest, which was like a plain with no undulations, and then couldn't help but secretly glance at her mother and Rinko behind her, whose massive objects looked as if they might burst through their clothes and pop out at any moment. A flash of undetectable envy and jealousy passed through her eyes.
Realizing that she was currently walking in an abandoned hospital performing a subjugation mission, Mizuki Yukikaze quickly shook her head to throw those strange thoughts out of her mind, and her eyes became firm again.
She would consider Onii-chan's matters after the mission was completed and they returned home. The most important thing now was to solve the monsters hiding in this abandoned hospital first.
She wanted to let Onii-chan see her heroic side when fighting monsters. Maybe she could let Onii-chan discover a side of her completely different from usual, and thus make him fall for her!
On the first floor of the abandoned hospital, as Yuu Mizuki, Yukikaze, and Rinko continued to go deeper, they encountered several waves of monsters one after another.
Most of these monsters were not very strong, and they were scattered in various wards.
Solving them wasn't difficult. With Shiranui and Yatsu Murasaki not helping, the three of them only took about half an hour to eliminate all of the approximately thirty remaining low-level monsters hiding on the first floor of the hospital.
"Rinko and Little Yuu did very well, but why does Little Yuu look like he has a lot of combat experience?"
"Although Yukikaze lacks experience, she can barely be considered to have passed."
After Yuu Mizuki, Yukikaze, and Akiyama Rinko cleaned up all the monsters on the first floor, Shiranui Mizuki stepped forward to carefully examine the three people in front of her. Confirming that no one was injured, she breathed a sigh of relief and began to comment on the performance of the three just now.
"On the second and third floors of the hospital, I can feel that there are more and stronger monsters, so don't relax your vigilance because of this!"
"Our task this time is to clean up all the monsters in this abandoned hospital."
Shiranui Mizuki glanced at the three, including Yuu Mizuki, warned them a few words, and then turned to lead them towards the second floor of the abandoned hospital.