Super Hurricane Combination Sphere, Uchiha Clan Massacre

The second-year curriculum was not much different from the first year's.

The academic classes were still the same subjects, only more difficult.

There was no longer any physical training in the afternoons. The students who had not been advised to drop out by now had clearly all extracted chakra. As long as they steadily endured the full six years, they would either become Genin recognized by Jonin and prioritized for the village's training, or become fresh talent for other departments.

The chances of wasting six years and reverting to an ordinary person were extremely low.

For the next five years, they would be taught how to gather intelligence and assassinate targets.

These lessons posed no difficulty for Izayoi; they were even boring.

After attending for just a few days, he could not help abandoning his original plan and once again sent a Shadow Clone to attend class.

He himself stayed home to train.

Although he could not practice the Five Elements Release at home, he could try developing ninjutsu.

Developing ninjutsu required a strong foundation in Nature Transformation or Shape Transformation, but as a transmigrator, Izayoi knew of one ninjutsu that required no such foundation—only enough chakra.

That ninjutsu was the Rasengan, an A-rank, non-elemental Signless Ninjutsu that the Fourth Hokage had taken inspiration from the Tailed Beast Ball to develop over several years!

As Naruto Uzumaki's signature ninjutsu, used from childhood into adulthood and developed into countless variations, the Rasengan was also the only ninjutsu in the original work whose complete training process had been revealed.

That training sequence had left far too deep an impression.

Anyone who liked Naruto could never forget that training method, and Izayoi was no exception.

However, Izayoi was not training the Rasengan to use as a trump card. As stated above, he was using it to try developing ninjutsu.

The Rasengan was a Signless Ninjutsu developed by the Fourth Hokage and held special significance in the Hidden Leaf Village.

Other than the Fourth Hokage himself, only his teacher and disciples had mastered this technique.

If Izayoi suddenly used this technique in the future, he would definitely draw the attention of the Hidden Leaf Village's higher-ups.

Without a reasonable explanation, it might provoke all kinds of suspicions.

That was not what Izayoi wanted.

Therefore, he wanted to use the Rasengan as a foundation to develop another Signless Ninjutsu—the Super Hurricane Combination Sphere.

Also known as the Multiple Big Ball Hurricane Rasengan, the Super Hurricane Combination Sphere was a ninjutsu Asura Otsutsuki had used against Indra Otsutsuki in the TV anime.

That technique was similar to Naruto Uzumaki's Planet Rasengan.

The principle behind it was to first create an energy sphere just smaller than a Big Ball Rasengan, then add five rotating energy spheres the same size as Rasengan into it.

Like the Rasenshuriken, this ninjutsu could be thrown or fired.

Once it exploded, it would trigger six consecutive explosions.

If the main energy sphere was destroyed, the five energy spheres inside would scatter and attack the enemy.

Moreover, just as Naruto Uzumaki could add various attributes to his Rasengan, this ninjutsu could likewise be infused with the five elemental attributes, or even combine all five, like the Third Hokage's Five Release Great Barrage Technique.

When that time came, its power would be devastating enough to destroy heaven and earth.

If not for the two traits, Otsutsuki Bloodline (Red) and All-Attribute Constitution (Purple), Izayoi would never have dared to entertain such an idea. He would have been satisfied just learning the Rasengan.

But the talent for hand signs brought by the Otsutsuki Bloodline (Red), along with the All-Attribute Constitution (Purple) and Chakra Control that had already been upgraded to the purple rank, gave Izayoi the capital to turn this anime-original ninjutsu into reality.

With his powerful Chakra Control, Izayoi mastered the Rasengan in just one week.

Next, all he had to do was continue pouring chakra into it, enlarge the Rasengan to the size of a basketball without letting the energy sphere explode, and then try condensing smaller energy spheres within it.

However, Izayoi could not train at home during this stage.

If the energy sphere exploded, the consequences would be unimaginable.

So, he patiently began waiting for the Uchiha Clan Massacre.

When May 15 arrived, Izayoi finally awaited that day.

There were usually only two or three classes in the afternoon, with a Survival Exercise held every few weeks to assess the students' growth during that period.

Even under such special circumstances, school would normally end at around five in the afternoon.

But that day, the students of Class One, Year Two, unusually had four afternoon classes.

The final Survival Exercise did not end until dusk fell.

The Uchiha Clan compound was near the Naka River, practically no different from the outskirts.

Without using the Body Flicker Technique to travel, it would already be nightfall by the time Sasuke Uchiha returned to the clan compound.

A full moon had already appeared in the sky.

Against the glow of the sunset, it looked somewhat blood-red.

Izayoi's Shadow Clone watched Sasuke Uchiha's back as he left the school gates and jogged home.

He knew that after today, this Uchiha Sasuke, who was not especially aloof and did not care much about grades, would disappear completely.

In his place would be an Uchiha Sasuke radiating an icy aura, placing immense importance on grades and clan honor, whose emotions could be sent soaring and crashing by the slightest verbal provocation, and who was exceedingly easy to break.

Though the latter would be utterly tragic, Izayoi still looked forward to that moment.

After all, he had waited a full year for it.

The next day, news shook the Hidden Leaf Village and quickly spread outward. Through messages carried by spies, it soon reached the entire Ninja World.

After the Senju fell from prominence, the Uchiha Clan had become the Hidden Leaf Village's foremost noble clan—and even the number one Ninja Clan in the Ninja World. Yet the Uchiha Clan, whose Kekkei Genkai was reputed to be invincible in one-on-one combat and known as the Copying Eye and Genjutsu Eye, had been exterminated.

The culprit behind the clan's destruction was neither the equally renowned Hyuga Clan, nor the Hidden Leaf Village's upper ranks or other shinobi villages. It was Itachi Uchiha, the eldest son of the Uchiha Clan's current patriarch, who was only thirteen years old this year.

Over the following days, the name Itachi Uchiha rapidly spread throughout the Ninja World, making him the youngest S-Rank Missing-nin in the Hidden Leaf Village—and the entire Ninja World.

The moment Izayoi stepped outside today, he saw villagers discussing the matter.

This was a major event.

Its impact was no less than the Nine Tails' Rampage of Year 48 in the Hidden Leaf Village.

In just a few short years, the Hidden Leaf Village had successively lost the Fourth Hokage and his wife, a host of powerful shinobi, and its foremost noble Ninja Clan.

The Hidden Leaf Village had undoubtedly entered its weakest period since its founding.

Once, its Kage-level Experts were too numerous to count on one hand, and it had been the strongest shinobi village, capable of defeating four enemies alone. Now, only the aged Third Hokage remained as a Kage-level Expert.

After the Nine Tails' Rampage, the Hidden Cloud Village had cast covetous eyes on the Hidden Leaf Village and plotted against it.

Now that it had also lost its foremost noble Ninja Clan, it should logically have drawn the attention of even more foreign enemies.

Yet, in the years that followed, the Hidden Leaf Village remained perfectly peaceful.

Clearly, the Great Shinobi Villages had all noticed that something was wrong.