A Promise to Tsunade, Achievement Unlocked!

Sasori of the Red Sands blamed his parents' deaths on the Third Kazekage's incompetence, and on the Second Great Ninja War.

So when the Third Kazekage tried to start a war, he sneaked back into Sunagakure and killed the Third Kazekage.

And that had instead ignited the Third Great Ninja War?

Seeing the grim expressions on the three of them, Hatake Sakumo smiled and reassured them. "Don't worry. As long as you stay alert for the time being, there won't be any problems!"

Over the next half month, Asuma's squad encountered several probing attacks from Sunagakure ninja squads.

Unfortunately, they all retreated at the first sign of contact.

After several battles, Asuma had only earned six thousand Experience Points—not even as much as in the first battle.

A month passed.

The ninja squad sent to relieve them arrived. After handing over their duties, Asuma and the others set off for Konoha.

Konoha Year 42, June 20th, a little after two in the afternoon.

Asuma and his group returned to Konoha.

The squad disbanded. After going home and washing up, Asuma planned to find somewhere to train Wind Style: Rasenshuriken. But not long after he left the house, someone blocked his path.

"Hey, brat, did you forget something?"

Tsunade stood with her arms crossed, staring coldly at Asuma. Her tone was far from friendly.

Asuma's scalp prickled, and instinctively, he felt that something was wrong.

The last time he had gotten drunk, he really had forgotten what promise he had made.

But if he admitted it honestly now, would she beat him to death?

"Ahem, Sister Tsunade, of course I haven't forgotten. It's just that I've been out on missions this whole time."

Asuma forced himself to say it.

Tsunade nodded slightly, her expression softening considerably. Then she turned around. "Let's go!"

Asuma opened his mouth, but in the end, he still did not dare ask. He could only obediently follow behind her, arriving once again at the Senju Ancestral Home.

The enormous estate had only Tsunade living in it, making it feel exceptionally deserted.

Following Tsunade into the study, Asuma saw scrolls scattered all over the floor.

"I've already mastered the Fūinjutsu for storing Chakra. Right now, I'm trying to develop a Cursed Seal that can spread Chakra throughout the entire body," Tsunade explained before sitting behind the desk.

Asuma's eyes lit up when he heard that. "What Fūinjutsu?"

Tsunade glanced at him. "The Yin Seal... You want to learn it?"

Asuma shamelessly admitted, "Sister Tsunade, I'm afraid there aren't many people who wouldn't be tempted by a Ninjutsu like that."

Tsunade said, "I promised to teach you Medical Ninjutsu and Fūinjutsu, and you would assist me in creating a Ninjutsu that could revive the dead. I can teach you this Yin Seal as well."

"However, this Ninjutsu demands extremely high Chakra Control. Even I took nearly a month to learn it."

"And you've only just mastered Fūinjutsu. If your Chakra Control isn't good enough, you won't be able to learn it either."

"In fact, in all of Konoha right now, there are only a handful of people capable of learning this Fūinjutsu!"

Hearing Tsunade's words, Asuma secretly breathed a sigh of relief, then smiled. "Sister Tsunade, you underestimate me too much."

"I haven't had the chance to study Fūinjutsu theory yet, so I don't know how talented I am in that regard. But Chakra Control? That's what I'm good at!"

Tsunade raised an eyebrow slightly.

Asuma did not waste words. He raised a hand, and Chakra rapidly gathered in his palm. A Rasengan swiftly took shape in less than a second.

Tsunade's pupils contracted. "Rasengan!"

"How do you know that technique?"

Asuma froze. "Huh? Someone else already knows this technique?"

Tsunade was also stunned. "You created it yourself?"

Asuma nodded, without the slightest trace of pretense. "What I'm best at right now is Wind Release Chakra Nature Transformation. Once, I saw a spinning shuriken, and it gave me an idea. I wanted to create a unique Wind Style Ninjutsu."

"A spinning shuriken?"

Tsunade was puzzled. It did not seem related to the Rasengan at all.

"This is only a half-finished product."

Asuma smiled as he explained, "Next, I need to inject Wind Release Chakra Nature Transformation into it, then expand it until it reaches the ultimate transformation of form, creating a Ninjutsu like a windmill!"

"This isn't a suitable place. We can go somewhere open, and I'll demonstrate it."

Tsunade's expression turned serious, and she completely believed Asuma's words.

She knew very well that Namikaze Minato's Rasengan had been inspired by the Tailed Beast Bomb.

"Let's go try it!"

Tsunade rose to her full height and strode outside on her long legs.

Asuma dispersed the Rasengan and followed her out.

Fifteen minutes later, the two arrived at a secluded clearing near the Forest of Death.

The area was large enough and remote enough that few people ever came here.

"Begin!"

Tsunade looked at Asuma with anticipation.

Forming a Rasengan one-handed in under a second was enough to prove Asuma's powerful Chakra Control.

So she was looking forward to seeing his technique.

If it could be completed as he had described, it would definitely be an S-rank Ninjutsu!

Creating an S-rank Ninjutsu at the age of nine—he would absolutely become the first person to do so since Konoha's founding!

Asuma nodded without speaking. He quickly formed another Rasengan, then injected Wind Release Chakra into it.

As the Wind Release Chakra entered it, the Rasengan immediately began to change. A sharp whine rose into the air, and blazing white, rapidly spinning blades appeared around the Rasengan.

Tsunade's eyes widened involuntarily. "What powerful Wind Release Chakra!"

At that moment, Asuma raised his hand, then lifted it high.

In that instant, the Rasengan in his hand suddenly expanded, completely transforming into a huge white windmill spinning at high speed.

The sound of air friction became piercing beyond measure, while the rapidly rotating Wind Release Chakra drove the surrounding air into a violent whirl.

Even the gravel on the ground was swept up, only to be shredded by the high-speed airflow in the blink of an eye.

"It really is an S-rank Ninjutsu!"

Tsunade's face was filled with shock. At the same time, she suddenly gained greater confidence in her goal of creating a Ninjutsu capable of reviving the dead.

Perhaps it really is possible...

At that moment, Asuma spoke. "Sister Tsunade, please step back a little, and be ready to retreat at any time."

"Although I have confidence in myself, this technique has only just succeeded. If anything goes wrong, being this close would be very troublesome."

As he spoke, a Shadow Clone appeared at his side.

"Hm?"

Tsunade's gaze sharpened. This guy doesn't even need Hand Seals for a Shadow Clone?

Asuma's Shadow Clone rapidly retreated, and Tsunade immediately followed.

They retreated a full hundred meters before stopping.

Seeing this, Asuma secretly took a deep breath. Then he swung his arm, and the Wind Style: Rasenshuriken he held aloft shot out with a buzz, spinning at high speed.

The instant he threw the Ninjutsu, Asuma used the Body Flicker Technique to retreat at top speed.

Almost at the same time, he heard the system notification.

Achievement—Created an S-rank Ninjutsu without hand seals at age nine!