It's certainly not possible to teach Fuinjutsu in a restaurant, so Kushina prepared to take Mokgetsu to a house equipped with Uzumaki Fuinjutsu to teach.
The house had a large space with rooms for resting and many others for cultivation.
As Kushina was leading the way halfway, two Anbu Ninjas wearing animal masks and black robes suddenly appeared and said:
"You can't mean to take him to that place, it's not allowed."
"Why so many rules? What if we go there?" Kushina said with her hands on her hips, in a bad mood.
Facing the two Anbu who had been monitoring her all the time, Kushina didn't feel like showing a single friendly face.
"Besides, when Minato was around, I didn't see you saying anything."
"Namikaze Minato was specially allowed, it's different," the Anbu Ninja said calmly.
There were many reasons for Minato's allowance, besides being close to Kushina, he was also Jiraiya's protégé, and of course, the Konoha high-ups were willing to give him trust.
Seeing the two Anbu appear suddenly, Mokgetsu showed a slightly surprised expression.
Of course, he was faking it, as Mokgetsu had already observed with his Byakugan. Mokgetsu accelerated his Fuinjutsu training on the surface to build an image of a talented ninja using these two cameras.
"Since there's a problem, why don't we find another place? There should be some quiet spots around here," Mokgetsu said with a gentle smile.
"If you say so, then that works too." Kushina cooled down a bit. She's not afraid of Anbu, but she had to consider Mokgetsu; clashing with Anbu wasn't a good idea.
The face beneath the Anbu masks relaxed slightly, feeling that Mokgetsu was sensible. They didn't want to clash with a Jinchuriki, but if they didn't intervene, they would be derelict in their duties.
Finding a cool and deserted place, Kushina began explaining the Four Symbols Seal to Mokgetsu.
"The Four Symbols Seal is a Fuinjutsu with very high potential; the stronger you are, the stronger the Four Symbols Seal can be. Moreover, there is potential for some other powerful Fuinjutsu to be developed based on the Four Symbols Seal."
Mokgetsu nodded as he recalled this Ninjutsu's details, seemingly realizing it indeed worked like that. Minato had improved the Four Symbols Seal; using it doubly could form the Eight Trigrams Seal, and there was also the Internal Four Symbols Seal, a suicidal technique.
The Internal Four Symbols Seal hasn't yielded any combat results yet, but the Eight Trigrams Seal was powerful. The first layer of the Four Symbols Seal was used to seal the Nine-tails, while the second layer could transform the leaking Nine-tails' Chakra into the Jinchuriki's own Chakra.
This concept meant that even if Naruto trained nothing, the Eight Trigrams Seal's Chakra could still grow rapidly.
The teaching lasted about three hours.
"I need to go back, I'll give you the Cultivation Scroll for the Four Symbols Seal next time we meet," Kushina explained as she got up.
Her time to be out and about each day was limited; she couldn't stay outside forever.
"What would you like for dinner? I'll prepare the ingredients first," Mokgetsu asked with a smile.
Kushina's eyes sparkled; she thought for a moment and said, "Braised Pork, Squirrel Fish, Magical Mapo Tofu."
"See you; be sure to practice Fuinjutsu well, or else Teacher Kushina can be very scary when she gets angry." Thinking about the delicious dishes awaiting, Kushina cheerfully waved goodbye to Mokgetsu.
"Goodbye," Mokgetsu smiled and nodded.
Then Mokgetsu created a Shadow Clone to buy groceries, while the main body headed to the Southern Border Forest to teach students.
"Teacher Mokgetsu." Shisui, who was cultivating, paused and greeted Mokgetsu.
He couldn't rely on vision to determine if it was a Shadow Clone, but typically, Mokgetsu coming during cultivation meant it was the main body.
Mokgetsu smiled back and then began his guidance.
As the training time was almost up, Mokgetsu had them stop and rest and chat.
"Teacher Mokgetsu, how was your mission this time, was it smooth?" Nohara Rin asked curiously.
Because this time she hadn't seen Obito and Might Guy come by, usually, they would come around if they had time after a mission.
"Faced some difficulties, but the result was not bad," Mokgetsu reflected and replied.
The process was tough, but everyone gained something.
"Hearing that from you, Teacher Mokgetsu, makes me feel relieved; I was quite worried about Obito and Kakashi getting into arguments during missions," Nohara Rin said with a relieved smile.
"Both of them care about each other so much, but don't want to say it out loud," Nohara Rin sighed.
From her perspective, they were both tsundere; even if they worried, they would only utter biting words.
"Maybe they enjoy it," Mokgetsu chuckled.
He felt that if one day Kakashi stopped being confrontational with Obito, the latter might find it unsettling.
"Huh, is that so?" Nohara Rin was a bit surprised.
"Just a guess."
"If that's the case, then Kakashi and Obito are getting along just fine," Nohara Rin clapped her hands together and smiled softly.
Mokgetsu glanced at Nohara Rin, quite curious in his past life about who Nohara Rin truly liked.
Very concerned about Obito, helping him with various things, and swiftly bandaging him when injured; very attentive to Kakashi, quickly gathering friends to celebrate after Kakashi was promoted to Jonin.
Twelve-year-old Nohara Rin's affections are unclear, but based on the past few months of observation, Mokgetsu noticed that eight-year-old Nohara Rin doesn't like anyone, not Kakashi or Obito, to the extent of love.
Nohara Rin's concern for Obito is akin to that for a younger brother, worrying about his safety and providing assistance when Obito is reckless.
As for Kakashi, Nohara Rin has a bit of admiration like a young girl mixed with a friend's affection.
If forced to say who she likes, it seems now that Kakashi has a better chance, as Nohara Rin's feelings for Obito are somewhat like family affection; although very close, it's not likely they would end up together.
But this is Mokgetsu's simple speculation; he can't be sure of the future, because the three of them are still very young. Who knows, maybe in the future, Nohara Rin won't like either of them.
...
In the evening, Kakashi woke up from his bed, made himself a simple dinner, and after eating and walking for a bit, he started cultivating the Breath of Thunder.
Obito's Sharingan gave him a lot of pressure, and Might Guy was also waiting to challenge him, Kakashi wished he could travel back in time to use the time wasted to cultivate.
Kakashi set up the wooden stakes used for cultivation in the yard, then walked to the edge of the yard, drew the White Fang Short Blade, took a stance, and closed his eyes.
He was recalling the move he used during a mission, a technique he created by combining the Hatake Blade Technique and the Breath of Thunder.
"Huh." Kakashi's breathing rhythm slowly changed, letting the air gather Chakra on his feet.
"Thunder Flash!"
Swish!
Kakashi suddenly opened his eyes, Chakra burst from his feet, and with a thunderous roar, he lunged forward like a bolt of lightning.
Pa-ta!
The wooden stake instantly split in half and fell to the ground, the cut incredibly smooth.
"This technique still needs improvement." Kakashi stood in place thinking for a while and came to a conclusion.
Previously, there was no time to analyze much when he used it for the first time, but now using it again, Kakashi discovered a problem.
Speed, the speed of this technique is too fast.
While high speed is a good thing, if the speed surpasses one's reactions, it's not entirely beneficial.
Such a direct charge, if the opponent sees through the nature and trajectory of the technique, could become quite passive, not only being hard to hit but also very risky.
After thinking for a while, Kakashi thought of a solution. If he could make Thunder Flash turn, it would become much more flexible.
"I'll ask Teacher Mokgetsu when I cultivate tomorrow." Then, Kakashi thought of Mokgetsu, who was faster than his Thunder Flash, but clearly didn't have this issue.
Kakashi washed up after cultivating until ten o'clock and went to bed.
The next day.
"Slept really well." Obito stretched lazily, feeling refreshed.
"Why is it still so bright outside? Feels like I've slept for quite a while." Looking at the sunlight streaming through the window, Obito scratched his head.
Checking the time, Obito was dumbfounded, seeing that the clock's hour hand was pointing at the number nine.
Looking at the bright sun outside, Obito knew it couldn't be nine at night, and he had returned at noon.
"Which means, I've slept from noon yesterday until nine this morning!" Obito's eyes widened. He didn't expect he could sleep so much; it was nearly a whole day.
For a moment, Obito thought a lot, regretting not waking up at night to share his heroic deeds with Nohara Rin.
"No wait, this isn't the time to regret that; I'm late!" Obito suddenly remembered he still had regular cultivation today.
"Grandma, why didn't you wake me up?" Obito quickly ran downstairs and asked.
"I saw you were so tired, so I thought I'd let you sleep a little longer." His grandma said with a kind smile.
Faced with the concern of his family, Obito couldn't say a word of blame. He grabbed a piece of bread and ran towards the Southern Border Forest.
By the time Obito arrived, Mokgetsu had already been cultivating with his disciples for a while.
"Late on the first day after the mission?" Kakashi, who was learning Armament Aura, immediately mocked.
"Obito doesn't usually be late for no reason, so he must have been helping the elderly, right?" Nohara Rin said gently.
Nohara Rin's words made Obito scratch his head a bit embarrassed. Normally, he was indeed late because he helped others, but that wasn't the case today.
"Hehe, accidentally overslept." Obito didn't lie to explain but instead said the truth with some embarrassment.
"No worries, given how exhausting this mission was, let's start cultivating." Mokgetsu smiled and said.
Obito showed a relieved smile, knowing Mokgetsu wouldn't mind such small things.
"Kakashi, I want to challenge you." At noon, Obito couldn't wait to challenge Kakashi.