Kyōka Suigetsu

Konoha, a week before the night of genocide, in a house in the Uchiha territory. Uchiha Kai was holding a regular katana with a simple green hilt.

"Finally, after 14 years of relentless training, I have managed to activate the Shikai of my Zanpakuto," Uchiha Kai muttered to himself. Uchiha Kai was a reincarnated person from planet Earth, 14 years old this year. He was born with Kyoka Suigetsu in his mental plane. He doesn't know how he got this Zanpakuto, but he can summon it whenever he wants from his mental plane. He trained hard for nearly 14 years, learning many sword techniques and styles from the Uchiha clan. He was known as a genius of the Uchiha, along with both Shisui and Itachi.

But he knew very well that he is definitely not as strong as those two unless he awakened Mangekyou Sharingan or activated the Shikai of his Kyoka Suigetsu. During his 14 years in the ninja village, he also managed to open three tomoe Sharingan.

Now, just a week before the night of genocide, he had finally managed to awaken the Shikai of Kyoka Suigetsu. The Shikai of this Zanpakuto can create the strongest illusions that put the five senses of his targets into an extremely realistic illusion. This Zanpakuto was one of the strongest ones in the entire Bleach series. Whoever saw the released state of the Shikai would be forever stuck in the illusion until it was released or they touched the sword itself.

At first, he planned to get away from this village before the night of genocide along with his loved ones, but now he finally has a chance to save everyone in his family. Even though the Uchiha people may appear extremely arrogant and cold to outsiders, they are still very caring towards their loved ones. So Uchiha Kai doesn't have any intention of letting his family be killed by the psycho Itachi.

In his opinion, what Uchiha Itachi did to his own clan was truly unacceptable. There are nearly 2000 people in the Uchiha clan, and many of them are not even ninjas. But Itachi was so obsessed with his brother that he actually killed even those harmless people in order to save his younger brother.

Uchiha Kai also knew that Itachi's excuse for sacrificing the clan for the village is just a hypocritical lie. Itachi only cared about his younger brother Sasuke. Itachi never cared about the safety of the village. This was clear in the anime. When Danzo came to collect the corpses after Itachi killed the entire clan, Itachi returned to Danzo and threatened him. If he did something to Sasuke, Itachi would release all the military secrets of the Konoha village to the entire world. From this sentence alone, it was clear that Itachi was a selfish psycho who cared only for his brother.

Uchiha Kai had read many fanfics about Naruto in his previous life, so from his memory, he knew the approximate date of the night of genocide. Uchiha Kai was now working as a deputy of the Konoha police department under Chief Uchiha Fugaku. Uchiha Kai also has a good reputation in the Uchiha family. But currently, there are mainly two factions in the Uchiha family: one is the peaceful faction that wants to coexist with Konoha, and the other is the rebellious faction that had the idea of conducting a coup d'etat against the Konoha village. Uchiha Kai belongs to the rebellious faction and, with his status as a genius and influence from elders, he had also managed to become the leader of this faction. Now, the number of people who supported the rebellious faction is also higher than those who seek peace. This is also understandable because all these years, the Uchiha clan was heavily suppressed by the village and is almost pushed to the edge of the village. Also, because of the higher-ups of Konoha, the reputation of the Uchiha clan is also very low. This has made many people support the rebellious faction even more.

The next day, Sasuke was coming back from the ninja academy with his brother Itachi, but he suddenly stumbled upon a guy who was wearing a black outfit with a Uchiha emblem on his shoulders. He was also carrying a sword on his waist. This was Uchiha Kai.

"Hey, Itachi," Uchiha Kai greeted, his expression unreadable. Itachi, curious about the ominous atmosphere surrounding Kai, hesitated before responding.

"What's going on, Uchiha Kai?" Itachi inquired, eyeing the emblem on Kai's shoulder.

Kai took out the Zanpakuto from his waist and put it upside down in front of Itachi. Suddenly, Uchiha Itachi, who was standing there, activated his Sharingan and took out a Kunai, speaking, "What are you trying to pull off here?"

Uchiha Kai looked at Itachi unbothered and spoke, "Shatter Kyoka Suigetsu." Itachi was really vigilant after hearing this. He thought Kai was going to use some sort of ninjutsu, so he was ready to attack at any time. To his surprise, nothing actually happened, and Kai just put his sword back in the sheath and walked away. Both Itachi and Sasuke stared at the walking Kai with a dumbfounded expression.

Days kept passing by. During these days, Uchiha Kai showed the released state of his Shikai to nearly everyone in the Uchiha clan. He also managed to show it to both Kakashi and Might Guy. However, he was unable to meet the Hokage face to face during this time. He was also not able to meet Danzo. But he was able to meet many influential people from various clans using his identity as a deputy of the police department.

Just like this, seven days passed by, and it was finally the night of the genocide.