Even so, the Demon Slayer Blade is still a top-notch weapon.
Besides this weapon, another major gain for Meikyō in the Demon Slayer World was the Breathing Technique.
When he first entered the Demon Slayer World, Meikyō's strength was considered to be at the Jonin, but his weakness was that his abilities were not comprehensive enough. At least he did not master two or more Chakra Nature Transformation like other Jonin.
Breathing Technique steadily propelled his strength upwards, especially after he learned Sun Breathing and mastered the Transparent World.
Meikyō was confident that after spending so much time in the Demon Slayer World, if he were to fight someone who had just entered the Demon Slayer World, the former would definitely be able to easily defeat the latter.
"And then there are these things."
Meikyō took out three test tubes filled with two-thirds of their volume of blood from his pocket. Each tube was covered with various sealing runes and had a note attached to it.
Tong, Yi, Ban.
The blood of three Upper Rank Demons.
As for Muzan Kibutsuji, if Meikyō had known that he could Awakening the Mangekyo at that time, he might have tried to collect some, but unfortunately, he did not.
Muzan Kibutsuji was indeed very strong, Meikyō was confident that if he could awaken the Mangekyō Sharingan and steadily advance to the Kage Level, suppressing Muzan Kibutsuji would not be difficult.
But Muzan Kibutsuji's most disgusting aspect is that he can revive even with only a small amount of flesh and blood. Given the strength of Meikyō at the time, this was something to be very wary of.
Not to mention, with Meikyō's strength, he couldn't hold back his strength like Muzan Kibutsuji did when facing Doma and Akaza. He could only win by going all out to completely annihilate Muzan Kibutsuji.
Even after that battle, he fell into a coma due to exhaustion.
However, the blood of the three Upper Rank Demon should be enough for research, but Meikyō still plans to do these things after he becomes stronger.
Because he doesn't yet have the ability to properly study this blood, while those who do, like Orochimaru, are far superior in strength and status, he would inevitably be at a disadvantage in cooperation. Meikyō also cannot explain the origin of these things, and if he were to expose his secret of being able to travel between worlds as a result, it would be a loss that outweighs the gain.
At least, Meikyō is only a teenager now, and he won't have to worry about his lifespan for a long time to come.
Finally, there were the two gifts that Yoriichi Tsugikuni, as the Tsugikuni Yoriichi of world consciousness, gave after Meikyō destroyed Muzan Kibutsuji, the virus that caused the Demon Slayer World.
To be precise, Tsugikuni Yoriichi gave Meikyō three gifts as a token of gratitude, but Meikyō has already used one of them in order to prevent certain things from happening in that world in the future.
Two gifts were given, one of which was the cup of tea that Tsugikuni Yoriichi gave to Meikyō.
This was personally formulated by him, as the embodiment of world consciousness, specifically for Meikyō's bloodline genes. It can use power on par with nature to evolve Meikyō's bloodline, repairing some of the defects caused by the residual Otsutsuki genes of the Otsutsuki Uchiha while awakening the Mangekyō Sharingan.
In other words, even if Meikyō runs out of eye power in the future, it will still be able to recover, but the process will be relatively slow. As for how slow, Meikyō still has some time before she can complete the evolution of her bloodline and activate the Mangekyo. Without the Mangekyo, she cannot use its Dojutsu to consume eye power, so she naturally does not know how fast she can recover.
But at least, this has ensured that Meikyō will have enough power to stand at the top of the Ninja World for a long time to come.
Secondly, there is Tsugikuni Yoriichi's understanding of Breathing Technique and swordsmanship when he was a human.
There is too much information in this part, and Meikyō will need some time to slowly digest it all. Once he has fully digested it, Meikyō will be able to transform it into resources to improve his Breathing Technique and swordsmanship.
This is also the direction that Meikyō plans to focus on before activating the Mangekyo.
Uchiha Clan Compound, a training ground.
"Hmph, this brat has finally emerged from seclusion."
Uchiha Yu, who had just finished training with Shisui for the day, stood by the sidelines holding Shisui's small hand, watching Meikyō practice her swordplay in the training field.
Even with Uchiha Yu's perspective, he felt he couldn't quite understand Meikyō's sword techniques.
This surprised him.
He knew that Meikyō's swordsmanship was more than one level above his own.
Among the people he had ever met, perhaps only Tobirama Senju and Uchiha Izuna possessed swordsmanship at the level of a master, or even a grandmaster.
Shisui watched the figure of Meikyō wielding a sword with great curiosity, and quietly opened his One-Tomoe Sharingan, wanting to see more clearly.
Uchiha Yu covered Shisui's eyes with his hands.
"Even I, an old man with the Three-Tomoe Sharingan, cannot see through Meikyō's level of swordsmanship. It is too early for you now and will affect your future development."
"I understand, Grandpa Yu!"
Little Shisui nodded vigorously and said obediently.
Looking at the sword-wielding Meikyō and then at Shisui beside him, Uchiha Yu stroked his beard with satisfaction.
With this level of swordsmanship, plus the Three-Tomoe Sharingan and Fire Style, Uchiha Yu was certain that even if Meikyō couldn't awaken the Mangekyō Sharingan in the future, he would definitely grow to the level of a Kage, at least no worse than Konoha White Fang.
With the addition of Uchiha Shisui, who displayed extraordinary talent at a young age, the Uchiha Clan, with such a brilliant young talent, is poised for a revival.
"Call..."
Meikyō stopped what she was doing and let out a long sigh of relief.
Tsugikuni Yoriichi's swordsmanship is unfathomable. As an incarnation of the world's consciousness descended to earth, his swordsmanship can be said to be close to the Tao.
Even after only a preliminary integration of the content provided by Tsugikuni Yoriichi, Meikyō could feel a significant improvement in his swordsmanship, and even had concrete ideas on how to further integrate the swordsmanship of the two worlds.
"Brother Meikyō!"
Shisui Shui jogged over and handed Meikyō a water bag.
"Thank you, Shisui."
Meikyō took the water bag, drank a sip, and smiled as she patted Shisui's head.
"Now that your retreat is over, what are your plans for the coming days?"
Uchiha Yu walked over slowly, his hands behind his back.
Not yet.
Meikyō shook her head.
"In that case, go and prepare to take on more high-level missions. In my opinion, as long as you don't encounter the Five Kage or Jinchuriki, there shouldn't be any missions that can stump you. Once you've accumulated enough merit and become Jonin, start preparing to gradually take over my influence within the clan."