(A/N: Do you want me to add only one gender-bend such as Female Gojo or something?! I just thought of it XDD.)
"Sensei! What is that?! Are you alright?"
Ryoma was shocked to death.
His teacher was spitting fire out of his mouth.
'How badass it was!'
"Hehehe, it was just an experiment! I am fine!" Yoichi awkwardly grinned.
"I'm going to see our two girls. Let's go." Yoichi stepped out of the lab.
"Ah, sensei! Wait for me!" Ryoma followed Yoichi to the library.
Inside the library, the smell of old papers that dried up and were collecting dust unfolded his eyes. These old covers were a testament to how long these books stayed in this library, knowledge about mysticism and the history of foreign worlds as well as the fundamental principles governing the worlds.
"Natsumi! Sumiko!" Ryoma greeted the two studious girls who were focused on the books as the flipping pages were the only noise around them when the idiotic boy arrived.
"Sssshhh!!! Did you see that sign?" Sumiko glared at Ryoma with malicious intent while pointing at the sign "Silence!" in any language available.
"Hehehe, sorry." Ryoma wholeheartedly apologized.
In the distance, Yoichi silently sat down near the two kids and glanced at them.
'Hmmm... What an intelligent child. Already learning arithmetic and persuasion tactics as a kid.'
"Arithmetics for Life!" and "Begginer's Guide to be The Best Merchant Alive" were the two books Yoichi saw. He looked at Sumiko's engrossed face, Yoichi was happy.
"Survival of the Fittest" and "Darwinism" were the odd books Natsumi was reading as Yoichi's expression began to be in a weird spot.
"Natsumi, let me ask you. Why are you reading such books?" Yoichi was completely puzzled at Natsumi's choice of books.
He wouldn't say it was anything weird but at the age of 6, a child drawn in from the social standings and natural selection felt so confusing and interested.
"My older sister always tells me "The strong survive and the weak die." every single time... Sensei... Now that she lost to you, is she a weak person now?" Natsumi was purely curious about this topic.
"Ahem!... Don't tell it to your sister, okay?! She would feel...kinda disappointed in you if you tell that to her." Yoichi shivered about his intrusive thoughts.
That woman, Yuki Zen'in, who valued strength over anything else must not be provoked! After all, such bloodthirsty women or yandere were unreasonable creatures to begin with.
Although he could still defeat her in battles, Yoichi doesn't want to fight in a full-scale life-and-death combat.
Furthermore, Yuki's character and attitude were Esdeath-like in terms of capability, fighting prowess, and commanding aura.
"... Just don't tell about it, alright? What about other subjects? There are many books out here!" Yoichi tried to change the topic.
"... I'll take the teaching materials now, sensei! I wanted to be a great teacher, so I must be dedicated and persevere!" Natsumi steeled herself, determination glinted in her eyes as she grabbed her needed books and read them.
"I will stay here, sensei. I'm gonna read books too!" Ryoma joined them, inspired by the mental endurance of the two.
"Any questions about anything?" Yoichi looked at the kids.
"Sensei! What's in that backroom with 18+ on the door?" Sumiko was curious and baffled by the seemingly mysterious room.
"Ahem! Ahem! That... That's for the forbidden books! It will not open for the three of you because it's forbidden!" He was flustered and blushed slightly but recovered in an instant with a stern reply.
Those things are... Adult stuff. Yoichi amassed many books including those ecchi stuff in the cosmos. The library was just a single drop of Akashic Records' power.
"Now, any more questions?" Yoichi looked at his students, who were nodding like chickens.
"No, Sensei! We can do this alone!" all three replied in unison.
Aware that this god-given blessing brought by their sensei must be capitalized in a 100% optimal state. They were thankful for anything. From the valuable resources to this all-encompassing land. But their hard work and efforts would certainly carry them into a bright future.
Yoichi pointed out the road and now it's their time to walk into the unknown path filled with hardships and perseverance.
"Hahaha, okay. Be sure to put it back in their right place after you read them." Yoichi chuckled and stood up, going back to the Training Grounds.
"Yes! Sensei!" the youngsters nodded.
Fires in their eyes engrossed once more in reading.
'I feel like I failed them as a teacher at this point. These kids are so mature than their peers!'
Yoichi merely shook his head, leaving out of the library with relief in his mind.
———————————————————
In the Training Grounds.
"How about I coat my Chakra with Ki and then release them in a different tenketsu?" Yoichi was on practical training, looking for possible exploits with his Ki and Chakra.
"Let me stretch these fingers first. It's hard to weave hand seals if you are not a total Naruto degen." Yoichi heard the popping sounds of his fingers and turned away from the dummy.
Fire Release: Stream!
He felt his Chakra gathered together in his lungs but Yoichi redirected his Chakra alongside his Ki through his spinal tenketsu.
His spinal tenketsu breathed a devastating fire attack that instantly annihilated the dummy with blazing fires surrounding the ground as Yoichi turned once again into the scene.
"Ohhhhh! So the Ki was protecting my tenketsu from the inevitable destruction while the Fire Ninjutsu I released was stronger than other average shinobi due to the massive quality of Chakra and Ki." Yoichi was enlightened once more by his bizarre way of releasing jutsu.
The formidable Ki was protecting his tenketsu from being demolished by the fire-infused energy he discharged. His clothes were fine and undamaged.
This was not surprising information about the usage of Ninjutsu in some weird areas. There are other jutsus that could easily expel Chakra from the body using side tenketsu. The main tenketsu being used regularly were the hands and mouth.
"Now let's go to the Three Basic Techniques! It's imperative and practical in such cases." Yoichi added the comment to his mind.
Body Flicker Technique!
He suddenly vanished and in the blink of an eye, he appeared at the back of the dummy.
"It's too basic... But what if I discharge some of my Chakra and Ki at the same time I leave the position?" Yoichi went back to his position.
Body Flicker Technique!
Instantly appearing at the back of the dummy once more, Yoichi noticed that he left an afterimage on his previous spot.
"What in the fuck is this?" He was fascinated by his fuck-ups.
"Hohoho, another jutsu for my "Phantom" title!" Yoichi understood the odd jutsu he managed to create.
The Ki and Chakra were both radiant life energy he emitted and when he expelled all of the energy from his tenketsu, the light radiating on his energy was able to stay and create an afterimage of him in his previous spot.
A life-like illusion of him in the same place!
It felt like his unique ability, [Phantom Decoy].
The illusion could stay for about 7 seconds, it was a pretty big window for a surprise attack or one Ninjutsu and it's done! Enemy dead.
Unlike the Basic Clone Technique, this weird variation that Yoichi made had an energy substance to it as well as his Ki concealing his Chakra fluctuations to his main body being an elusive figure on the battlefield.
As if like being in a Mexican standoff and the enemy only noticed small movements like faked breathing or swaying of the body.
Yoichi like a child, spammed the Body Flicker and Phantom Decoy around the training grounds. From the trees to the sitting illusions nearby.
"HAHAHA, What the fuck! All of them felt real! Even if the enemy has sensors, they will be deceived by an afterimage!"
This technique will be one of the best ways to annoy and terrify his enemies.
"But how can I solidify these energies into a pure clone? Ah! Through the seals! I need to be so meticulous and intricate in these patterns!" Yoichi knew his problems and got the gist of it.
Sealing energy and its illusion must tied to a property or effects before it must work.
An afterimage who could talk and walk?
Heh! That's easy for Yoichi.
He will implant seals to act as a brain reacting to the Chakra and Ki properties of the afterimage, solidifying due to a human-like structure inside of the seals making the afterimage feel solid with grass patches on grass or talking for a little bit.
But the twist here was to create a brand-new technique designed for its said functionality. Technically, if he could make a technique like that, he could have the Uchiha Obito's phasing in his afterimage with a conscious mind on and spam the shit the out of it since it was hand sign less.
It was a pretty badass technique since censors couldn't distinguish the real one due to the Chakra and Ki energy radiated and the afterimage could talk.
A rat-like technique for a rat-like person.
(A/N: I was mindfucked by what I wrote.)
"Theoretically, this could work! Long story short, the brain of the afterimage was the seal as the Chakra and Ki will both the alarm and the structure of the technique!" Yoichi rubbed his chin, deeply thinking about the feasibility.
"Let's make this work! HAHAHA, what a demonic technique designed for penetrating psychological defenses!" Yoichi was having a crazy laugh with a devious expression.
'I'll cement my title "Phantom" of the shinobi world!'