The Long Passage of Time

After obtaining those ninjutsu, Uchiha Sasuke's strength began to advance by leaps and bounds. Of course, such rapid progress was accompanied by the passage of time.

Four years had passed since the Night of the Uchiha Massacre. Uchiha Sasuke had successfully moved from the fifth grade of the Ninja Academy to the sixth grade; in another year, he would graduate.

However, compared to graduation, Uchiha Sasuke cared more about the improvement of his own strength. Throughout these four years, Uchiha Sasuke had been using the Shadow Clone Technique to train himself every single moment.

Heaven never lets down those who work hard. This saying holds true in the ninja world as well, and for Uchiha Sasuke, who possesses the Proficiency System, this truth is even more apparent!

Due to his growth in age, Uchiha Sasuke had changed into the outfit he wore upon his first appearance in the original work ahead of schedule. As for why he still chose this look, Uchiha Sasuke didn't know either; perhaps it was just because it looked cooler!

As for what being cool is good for, it is naturally to attract young girls—such as Haruno Sakura, who was sitting next to Uchiha Sasuke and couldn't take her eyes off him, and Ino, who was sitting in the front row and turned her head over ten times during a single class. However, Uchiha Sasuke had absolutely no interest in their gazes. As for the reason? That was naturally because the one currently in class was merely Uchiha Sasuke's shadow clone!

If it were Uchiha Sasuke's real body, it would be hard to say. Provided they didn't interfere with his plans, Uchiha Sasuke might chat with them, but if they did hinder his plans, then Uchiha Sasuke would likely gain an extra 1,000 points of general proficiency.

After all, one genin corresponds to 500 points of general proficiency, so these two, who were guaranteed to graduate from the Ninja Academy and become genin, could naturally provide Uchiha Sasuke with 1,000 points of general proficiency!

"Alright, that's all for today. You are on break now. You must train properly during the holiday, otherwise, you won't be able to graduate!"

Just as Uchiha Sasuke was sitting with his eyes closed listening to the lecture, Iruka finally announced the start of the break.

The moment Iruka announced the break, Uchiha Sasuke stood up to leave. After all, he could finish grinding all those maxed-out proficiencies today!

"Sasuke, come and have a match with me!"

Before Uchiha Sasuke could even walk out of the classroom door, Uzumaki Naruto chased after him.

Uchiha Sasuke turned his head to look at Uzumaki Naruto, who had been beaten black and blue by him just yesterday yet had recovered to his original state today. He felt a bit envious in his heart!

With the Sage Body combined with the Nine-Tails, this recovery ability was simply heaven-defying!

"Not interested!"

Facing Naruto's challenge, Uchiha Sasuke shook his head with a touch of sadness, then hurried home.

"Baka... baka!"

Seeing that Uchiha Sasuke had actually refused his challenge, Naruto was very indignant.

"Naruto, have you forgotten what happened on this day four years ago!"

Just as Naruto was about to chase after him, Shikamaru held him back and said with a solemn expression.

"You mean?"

Suddenly realizing, Naruto turned his head to look at the firm gaze in Shikamaru's eyes and instantly calmed down.

"That guy must be in a bad mood today. Let him be alone for a while!" Watching Uchiha Sasuke's retreating back, Shikamaru said helplessly.

"Sasuke-kun..." Hearing Shikamaru's words, Sakura and Ino also recalled what had happened four years ago and began to pray silently in their hearts!

If one were to speak of the original Uchiha Sasuke, his mood today would certainly not be pleasant, but for the current Uchiha Sasuke, his mood today was actually quite wonderful.

Over the past four years, besides improving his proficiency, Uchiha Sasuke had spent the rest of his time refining his temperament. Of course, more of it was spent diluting this body's obsession with Uchiha Itachi and the desire for revenge.

Although the current Uchiha Sasuke still wanted to exterminate the Anbu, the Root, and the clans of the Konoha high-ups, it was no longer about revenge, but rather a sense of responsibility. After all, he had transmigrated here for no reason and taken someone else's body; it would be inexcusable not to help the original owner get revenge.

What's more, in Uchiha Sasuke's eyes, those people were all walking sources of general proficiency!

Upon returning home, Uchiha Sasuke went straight to the basement. At this time, the basement was connected in all directions. Over these four years, Uchiha Sasuke's shadow clones had been training in the nature transformation of lightning-style chakra while simultaneously successfully connecting the areas beneath the Uchiha clan grounds.

Through the long underground passage, Uchiha Sasuke arrived beneath the Naka Shrine; this was where Uchiha Sasuke's shadow clones trained.

After Uchiha Sasuke returned, he immediately dispelled the shadow clone. After all, while he was still in the classroom, Uchiha Sasuke had discovered that his final training task had been completed!

[Host: Sasuke]
[Bloodline: Uchiha]
[Kekkei Genkai Ninjutsu: Scorch Release]
[Kekkei Genkai: Sharingan]
[Chakra Level: Elite Jōnin]
[Ninjutsu: Fire, Wind, Lightning, Water]

Opening the panel and looking at his base attributes, Uchiha Sasuke was not surprised at all. The only pleasant surprise was that his chakra level had increased from Jōnin to Elite Jōnin.

Every time his chakra level increased, it provided Uchiha Sasuke with a special fusion opportunity. Genin, Chūnin, Jōnin, Elite Jōnin—a total of four times. Excluding the fusion Uchiha Sasuke used for the Kurama Clan's Kekkei Genkai and the Scorch Release, there were two left. He could use one more, but the remaining one must not be used under any circumstances, otherwise, when he evolved his Mangekyō Sharingan into the Eternal Mangekyō Sharingan in the future, he would have to rely entirely on himself!

As for obtaining another special fusion opportunity, Uchiha Sasuke believed it was impossible in the short term. It had taken him nearly four years for his chakra level to rise from Jōnin to Elite Jōnin; he didn't know how long it would take to go from Elite Jōnin to Kage level, so it was safer to keep one special fusion opportunity in reserve.

General: [One-handed Seals: 2000/2000] [Body Flicker Technique: 1000/1000]

Only these two remained on the general panel. As for the rest, they had already been transferred to the fusion panel, as the proficiency had already been maxed out.

Taijutsu: [Strong Whirlwind Style: 3000/3000]

This was the result of fusing numerous taijutsu techniques such as Konoha Whirlwind, Konoha Gale, Konoha Rising Wind, Konoha Great Whirlwind, and Konoha Strong Whirlwind. Although Uchiha Sasuke was not at the top level in taijutsu, he was no longer a novice.

The only regret was that Uchiha Sasuke still didn't have a single Wind Release ninjutsu. The only Daitoppa he had obtained previously had been used to fuse into the Scorch Release ninjutsu!

Although there are many Fire Release ninjutsu, they have already been moved to the fusion panel. As for Lightning Release and Water Release ninjutsu, even though Sasuke has maxed out the nature transformation for both attributes, he still lacks the corresponding ninjutsu.

Scorch Release:

[Dragon Flame: 1000/1000]

[Wind-Flame Sword: 1000/1000]

Because the proficiency for nature transformation has been maxed out, it is no longer displayed. The Wind-Flame Sword is a sword technique fused from the Uchiha clan's Sword Leap Flame and Gale Sword. Unsurprisingly, it is indeed a Scorch Release sword technique. The only awkward part is that Sasuke does not have a sword capable of withstanding the high temperature of the Wind-Flame Sword!

Four years have passed in the blink of an eye, and the terrifying improvements are finally yielding interest!

I humbly ask all you masters for your votes (づ●─●)づ