Uchiha Yī rarely displayed his Body Flicker Technique; to be precise, he almost never exposed it in front of outsiders.
Compared to Fire Release, Lightning Release, and a series of Uchiha-style techniques, Uchiha Yī dedicated more effort to researching the Body Flicker Technique.
Uchiha Yī's talent in the Body Flicker Technique was quite good, after all, his son Uchiha Shisui had the nickname "Shisui of the Body Flicker."
And Uchiha Mirror's Body Flicker Technique was also quite famous; it was a Body Flicker Technique that Uchiha Mirror improved based on his own situation, under the guidance of the First Hokage's younger brother, Tobirama Senju, who was known as the fastest ninja in the shinobi world.
Uchiha Yī had already learned and incorporated the Body Flicker Technique into his daily combat a year ago.
He usually didn't display it outside, but in the combat space, he had fewer reservations. The explosive power brought by the terrifying Body Flicker Technique, combined with Uchiha-style swordsmanship, was all about suddenness.
Under Nawaki's slightly stunned gaze, Uchiha Yī's long sword pierced through Nawaki's abdomen.
However, Uchiha Yī was quickly dumbfounded. Before he could pull the long sword out of Nawaki's abdomen, Nawaki suddenly exerted force, making the sword pierce further into his abdomen. Nawaki's arms tightly embraced Uchiha Yī. At the same time, Nawaki was tightly clutching several ignited explosive tags in his hands.
Are you that ruthless?
Uchiha Yī was also shocked. An ordinary ninja, if stabbed through the abdomen by Uchiha Yī like this, would surely lose their combat ability. But Nawaki, relying on the terrifying vitality born from the combination of the Senju and Uzumaki clans, stubbornly held him back, intending to engage in a mutual destruction.
Fortunately, in this past month, Uchiha Yī had grown quite a bit. He decisively abandoned his long sword and quickly formed hand seals.
"Although I'll never see my sister again and can't become Hokage, even if I die, I'll send you to the Pure Land," Nawaki whispered softly as he got closer to Uchiha Yī.
??? At this moment, Uchiha Yī really wanted to curse Nawaki for being dishonorable. What kind of deep-seated hatred was this?
All I wanted was to kill you once to get a reward; do you really need to fight so desperately?
"Boom!" The explosion of the explosive tags engulfed both Uchiha Yī and Nawaki.
At the same time, Uchiha Yī's figure turned into mud, and his real body appeared not far away, panting heavily.
Earth Release: Earth Clone, one of the few Earth Release ninjutsu that Uchiha Yī was good at.
It was quite useful in such a scenario.
Afterward, Uchiha Yī's consciousness returned to his body.
"Ding! Congratulations, Uchiha Yī, for defeating Nawaki. You have obtained Nawaki's Senju clan and Uzumaki clan mixed-blood physique. Do you wish to fuse it?"
Fuse!
As Uchiha Yī's thoughts stirred, he felt as if his body was being torn apart. A terrifying energy was reconstructing his physique.
Damn your sister! Although fusing Nawaki's physique made Uchiha Yī very happy, even without Asura's chakra, this would provide Uchiha Yī with a huge boost.
However, this cellular tearing directly caused Uchiha Yī unbearable pain. Just as Uchiha Yī was about to faint, a warm sensation surged from his eyes, quickly neutralizing the pain.
His Sharingan unconsciously activated, the single tomoe in his eyes rapidly rotating. Soon, the single tomoe in those eyes quickly split, and each eye developed two tomoe.
Under the influence of Nawaki's physique, Uchiha Yī's Sharingan upgraded once again, becoming a two-tomoe Sharingan.
Just as Uchiha Yī thought his Sharingan might advance further, upgrading to three tomoe in one go, the tearing sensation in his body subsided, and the rapidly rotating two-tomoe also stopped spinning.
"Phew, phew, phew!" The fusion process was both brief and long, leaving Uchiha Yī looking as if he had just been pulled out of a bath.
However, this fusion significantly boosted Uchiha Yī's strength. His chakra increased twofold, and his physique also improved considerably. Coupled with the two-tomoe Sharingan, Uchiha Yī was confident in facing Kotetsu Hagane again; he was confident he could win.
Indeed, the combination of Uchiha bloodline with Senju and Uzumaki bloodlines was not as simple as one plus one equals two.
"The improvement is significant, the process is brutal," Uchiha Yī covered his eyes. He did not continue to challenge others.
With his current strength, challenging the young Asuma should not be difficult, but he needed to summarize the previous battle.
Before the battle, his strength was already superior to Nawaki's, and he successfully killed Nawaki in the end.
However, his combat experience was still a bit lacking, unlike Nawaki, who might have been seasoned on the battlefield for some time and almost got him killed.
It's a pity, if Nawaki wasn't too important, he wouldn't mind dying together with him. Uchiha Yī also wanted to know if mutual destruction could bring him rewards.
If that were truly the case, he could use some extreme methods to defeat opponents in the future, such as strapping explosive tags to himself and blowing up the opponent.
He still needed to pay more attention to this aspect from now on. Before he could activate Susanoo, he was still a glass cannon, so he had to be cautious when necessary.
Potential is ultimately just potential; sometimes, a single explosive tag is enough to be fatal.
In ninja battles, it's quite normal for the weak to defeat the strong.
This summary lasted for over an hour. Uchiha Yī then challenged Sarutobi Asuma. This young Asuma was likely around fourteen or fifteen years old, with strength comparable to Nawaki's. The upgraded Uchiha Yī quickly dealt with him.
And after the battle, Uchiha Yī also gained Asuma's Wind Release mastery at the corresponding stage.
Uchiha Yī hadn't really studied Wind Release before; he usually focused on Fire Release and Lightning Release, which were his innate attributes.
But after fusing with Asuma's Wind Release mastery, Uchiha Yī's proficiency in Wind Release instantly improved, no less than his current Fire Release and Lightning Release.
Indeed, he still had to rely on the combat space to cheat. Unfortunately, Granny Chiyo was truly unbeatable. If he could obtain Granny Chiyo's poisoning techniques and combat experience, Uchiha Yī felt he would be invincible.
.....................
Over the next few days, Uchiha Yī continuously familiarized himself with and adapted to his newly surged strength.
"Yī-kun, do you know? Something big happened at school today," Uzumaki Kushina said mysteriously to Uchiha Yī the moment he sat down.
Not long ago, Uzumaki Kushina managed to move her seat next to Uchiha Yī, which, while making Uchiha Yī helpless, also made him secretly pleased.
Indeed, his appeal to lolis was still immense.
"What is it?" Not only Uchiha Yī but even Minato Namikaze and others in front turned to look at Uzumaki Kushina.