My older sister is Kushina

After saying goodnight to Tamako, Uzumaki Hanamichi quickly returned to his room.

To be honest, he really likes the little guy; he's well-behaved and adorable.

Soon, Uzumaki Hanamichi sat cross-legged on the bed and then closed his eyes slightly.

Soon, he suddenly opened his eyes again.

However, when he opened his eyes again, his originally black pupils suddenly changed, turning blood red, and a strange black tomoe appeared in the center of the blood red pupils.

One, two, three!

Three-tomoe Sharingan!

However, Uzumaki Hanamichi's three-tomoe Sharingan did not stop changing. Soon, the black tomoe turned into six, forming a ring-shaped pattern of tomoe connected end to end in the center of the pupil.

At this moment, Uzumaki Hanamichi activated his Sharingan, which he had already awakened long ago, and his Sharingan had now evolved to the Mangekyou Sharingan stage.

The Sharingan is considered a secret of Uzumaki Hanamichi.

He had already awakened the single-tomoe Sharingan when he was three years old.

As for why he was able to awaken the Sharingan of the Uchiha clan, it was not because of the ninjutsu research system, but because of his mother's bloodline.

His mother was from the Uchiha clan.

His father once studied in Konoha as an exchange student at the Ninja Academy, where he met his mother, Uchiha Oriko. They fell in love and eventually got married.

After his marriage, his mother, Uchiha Oriko, joined the Uzumaki clan.

The Uzumaki clan founded Uzumaki Village and Konoha Village have always maintained a friendly alliance. The ninjas of the two villages interact frequently, and intermarriage is also very common. For example, the wife of Hashirama Senju, the first Hokage of Konoha, who is known as the "God of Shinobi", was from the Uzumaki clan.

At the age of three, he awakened the Sharingan due to an accident.

However, the Mangekyou Sharingan he now possesses was not achieved through the traditional advancement methods of the Uchiha clan, but rather through the ninjutsu development system.

The ninjutsu development system possessed by Uzumaki Hanamichi is not only for ninjutsu, but also has a strong research and development capability for bloodline power. However, the ninjutsu research and development system is not unconditional and must be based on existing conditions. For example, his Sharingan. If he had not awakened the Sharingan, the ninjutsu research and development system would not have been able to carry out research.

In addition, the time required for the ninjutsu research system varies depending on the level of the research object. For example, it only took him about half a year to advance from a single tomoe to a double tomoe, two years to advance from a double tomoe to a triple tomoe, and about five years to advance from a triple tomoe to the Mangekyou Sharingan system.

The ninjutsu research system is still developing the Sharingan, with the next goal being the Eternal Mangekyou Sharingan. The current research progress is 80.6%.

Although the development of the Eternal Mangekyou Sharingan is not far from 100%, the remaining 19.4% cannot be completed in a short time. Based on previous experience with the development progress, it is estimated that the development of the Eternal Mangekyou Sharingan will take at least two more years to complete.

To some extent, Uzumaki Hanamichi's ninjutsu research system is a product of long-term accumulation. To become powerful, one needs continuous accumulation, and he has been working hard for this all these years. The longer he accumulates, the stronger he becomes.

Half an hour later, Uzumaki Hanamichi finally deactivated his Mangekyou Sharingan. Although he possessed the Mangekyou Sharingan through the Ninjutsu Research System, it did not mean that he could control it at will. He still needed to practice and train constantly to better master the Mangekyou Sharingan.

The Mangekyou Sharingan was also a secret for Uzumaki Hanamichi. He didn't even tell his parents when he awakened it. Like the Uzumaki clan's sealing techniques, the Sharingan was something coveted, and he didn't want to reveal it. He remembered that in the Naruto storyline, both Shimura Danzo and Orochimaru coveted the Sharingan, and he didn't want to have his eyes gouged out or become some old man's guinea pig.

After deactivating his Mangekyou Sharingan, Uzumaki Hanamichi showed a hint of fatigue on his face.

However, he didn't rush to rest. Instead, he checked other information in the research and development system, among which he was most concerned about the research and development of the Nine-Tails' chakra.

On the night of the Nine-Tails' death, he took the opportunity of rescuing his sister Kushina to seal some of the Nine-Tails' chakra within his body, thus providing the basic conditions for the development system to target the Nine-Tails' chakra.

"31.9%"

Uzumaki Hanamichi checked the progress of the Nine-Tails' chakra. After obtaining the Nine-Tails' chakra, he began his research on it, and it has been almost a month now.

"It looks like it will take about two more months!"

Uzumaki Hanamichi secretly calculated that, based on the current research and development progress, it would probably take another two months to complete the development of the Nine-Tails' chakra.

Regarding chakra research, Uzumaki Hanamichi had previously conducted research and development. The results of his research were not the direct development of any ninjutsu, but rather the use of ninjutsu suitable for chakra. In a sense, it was a kind of auxiliary development. Furthermore, based on the completion of chakra research, new ninjutsu could be further developed.

Uzumaki Hanamichi was quite looking forward to his research on the Nine-Tails' chakra. Although he didn't have a continuous supply of Nine-Tails chakra in his body, he could borrow it. Currently, the Nine-Tails was sealed in his sister Kushina and the blond-haired boy. He could recharge it by finding the two of them. Of course, the blond-haired boy couldn't control the Nine-Tails' power yet, but his sister Kushina could control the Nine-Tails' power within her to a certain extent.

Of course, he wouldn't use the Nine-Tails' chakra in his body easily. From now on, the Nine-Tails' chakra in his body can be considered a trump card or a backup plan, to be used only when absolutely necessary in critical moments.

Besides the development of the Nine-Tails' chakra, there are many other things under development in Uzumaki Hanamichi's ninjutsu development system, mainly some ninjutsu development.

Currently, he has only shown the Wind Release technique to outsiders. In fact, he is equally proficient in Fire Release, Lightning Release, Water Release, and Earth Release, and his strength is almost on par with Wind Release.

Besides the five major escape techniques, Uzumaki Hanamichi also possesses many special techniques, such as sealing techniques, illusion techniques, and physical techniques, and in some aspects, his strength far surpasses that of his five major escape techniques.

With the help of the Ninjutsu Research System, Uzumaki Hanamichi is like a powerful entity. Of course, the Ninjutsu Research System's techniques are not omnipotent. For example, regarding bloodline limit techniques, although he possesses the Sharingan of the Uchiha clan, the system cannot develop techniques unique to the Mangekyou Sharingan, such as Uchiha Shisui's Kotoamatsukami, Uchiha Amaterasu, and Uchiha Obito's Kamui. The research system can only develop some common techniques. Of course, after awakening the Mangekyou Sharingan, Uzumaki Hanamichi also possesses his own special abilities.