Possibility of Completely Mastering the Mangekyō Sharingan...

Might Guy had not expected his whereabouts to be exposed the moment he appeared.

He had originally planned to make it seem like a chance encounter, but after learning that Uchiha Shunichi normally never left Uchiha Clan territory, he could only come over himself.

"Ahem! I was entrusted by Lord Hokage to teach you Taijutsu." Despite his embarrassment, Might Guy did his best to maintain his dignity.

"Yes, then I'll be in your care, Teacher Guy. However, I'm not a traditional Taijutsu ninja. It's merely because of my physical condition that I need to strengthen my body as quickly as possible," Uchiha Shunichi said politely.

"Youth... there are no shortcuts in Taijutsu training!" Might Guy said to Uchiha Shunichi with a stern expression.

But soon afterward, he returned to normal.

"Still, I can teach you the proper ways to train your body." Might Guy once again revealed his trademark smile.

If one ignored his inexplicable self-confidence and awkward conversation, Might Guy was actually an excellent teacher. After merely listening to him speak a few words and watching several demonstrations, Uchiha Shunichi felt that his training methods had become much smoother.

However, since this was not formal instruction, Might Guy only stayed for one afternoon before leaving.

After Might Guy left, Uchiha Shunichi did not continue training. Due to his body's condition, his daily training time was limited. Once he reached his limit, failing to recover would cause irreversible damage to his body.

Though... such damage was reversible for Uchiha Shunichi.

Uchiha Shunichi left the training ground, entered the bathroom, and climbed into a tub filled with water at a suitable temperature. He began adding various medicines to the bathwater.

Physical training required more than high-intensity exercise. It also required sufficient food, enough rest, and medicinal solutions that strengthened the body.

Otherwise, training alone would not make the body stronger. Instead, it would only make it increasingly frail.

More than an hour later, Uchiha Shunichi finished his bath for the day. After casually drying himself, he headed to an underground chamber far from his residence.

This place had originally been where the Uchiha Clan stored its weapons. However, those weapons had long since been sold off by Uchiha Shunichi, and the underground storeroom had now been converted into a laboratory.

Laboratories were rather out of place in the Shinobi World.

Because of ninjas, this world's technological development had gone off in a different direction. Although many powerful technologies had been invented, they were merely toys for nobles.

Still, conducting scientific research in the Shinobi World was quite convenient, especially when it came to the human body. The existence of chakra was practically a cheat code.

After more than three years of self-study, Uchiha Shunichi had already managed to create some somewhat useful things. For example, the nutrient solution he was currently drinking and the medicinal agents he used in his baths every day had both been extracted here.

The laboratory brightened as Uchiha Shunichi entered. Familiar with the place, he walked toward a row of cages covered in cloth...

Lifting the white cloth revealed numerous white mice of varying shapes inside the cages.

"Experiment log: Number One, failure... Number Two, failure... Number Thirteen has a slight abnormality. It can be observed further..."

Uchiha Shunichi created a Shadow Clone to keep records while he himself carefully observed the condition of the eighteen experimental mice.

"There's no need to continue this experiment. Uchiha Clan blood cannot possibly be integrated into animals so easily," the Shadow Clone responsible for recording said from the side.

Although they were the same person, a Shadow Clone with the same way of thinking could clearly examine problems from a different angle.

"No, Number Thirteen has produced some results. My goal is not to make the experiment succeed, but to find a direction for bloodline transplantation. After all, I can't possibly conduct human experiments."

Uchiha Shunichi continued observing the mice as he spoke slowly.

"We could consider cultivating them from the embryonic stage. Also... I think we can add chakra!" The Shadow Clone wrote something in the notebook before speaking.

"It's too early. If something goes wrong, I have no way to control it." A trace of excitement flashed through Uchiha Shunichi's heart, but he ultimately shook his head.

"What a pity Orochimaru isn't in the village. Otherwise, this would be much more convenient. That guy has a terrible personality, but he treats his disciples fairly well," the Shadow Clone said regretfully.

In fact, Uchiha Shunichi had originally wanted to seek out Orochimaru. Whether through Danzo or Mizuki at the academy, he should have been able to contact Orochimaru.

Based on certain memories in his mind, Uchiha Shunichi was seventy percent confident that he could tempt Orochimaru.

However, none of that could be put into action yet.

"At this stage, learning still comes first. Although obtaining technological materials in Konoha is somewhat difficult, it isn't impossible."

Uchiha Shunichi threw all the mice in the cages except Number Thirteen into a brazier at the side, then took out another batch of mice and injected them with medicinal agents he had concocted himself.

Afterward, with the Shadow Clone's help, Uchiha Shunichi began extracting nutrient solutions.

This was something he needed to drink every day. Without sufficient nutrition, Uchiha Shunichi would be crushed by the burden of the Mangekyō Sharingan.

The Mangekyō Sharingan was a double-edged sword. Even though Uchiha Shunichi's Mangekyō Sharingan ability was highly unique, that remained true.

After preparing enough nutrient solutions and bath medicine for three days, Uchiha Shunichi sealed the laboratory and returned to the study in his home.

The study was piled with books. Some were about Ninjutsu, while others covered rudimentary Sealing Jutsu techniques. Yet the largest number concerned Medical Ninjutsu knowledge and biological experiments.

Uchiha Shunichi had gone to great lengths to acquire these books.

In the end, he had needed to ask Granny Cat for help before successfully finding them. He had even obtained some experimental records from unknown sources.

Fortunately, because of chakra, the technology of this world was relatively simple. Yet for the same reason, so-called experiments basically had no principles behind them, only procedures.

The advantage was that he did not need to learn excessively complicated knowledge. The disadvantage was that knowing only the procedures meant he could not determine the results.

"Shunichi, I'm back!" In the evening, Uchiha Sasuke returned, dragging his exhausted body along with a huge package on his back.

"It looks like you had a good haul this time. Did you buy everything?" Seeing the package behind Uchiha Sasuke, Uchiha Shunichi's eyes immediately lit up.