Ye Yu just smiled and didn't answer.

Tsunade didn't know what kind of immortals would appear during the Fourth Shinobi World War, and with Ye Yu's current strength, he was not enough to deal with those immortals who appeared in the Fourth Shinobi World War.

However, Ye Yu didn't want to explain anything.

Tsunade saw that Ye Yu just smiled and said nothing.

She frowned.

"Do you think there are Ninja stronger than you in the Shinobi World?"

Ye Yu thought for a moment and said, "Even the Akatsuki's Ninja are already very difficult to deal with."

"Lady Tsunade, do you think I am already invincible in the Shinobi World?"

"Isn't it?"

Tsunade retorted.

Ye Yu didn't know what to say for a moment.

He didn't even know he was so strong in Tsunade's heart.

"I know very well what kind of Ninja I may face in the future. Since I can continue to become stronger, others certainly can too."

"As long as one person in this world achieves something, others may also achieve it."

"I don't think there are no Ninja stronger than me in this Shinobi World. I'm not that optimistic."

Tsunade was silent for a long time. She actually disagreed with Ye Yu's idea.

In her opinion, Ye Yu's strength was already incredibly strong, even showing a trend towards reaching her grandfather's realm. It wouldn't be long before Ye Yu would likely reach her grandfather's realm.

The God of Ninja, a Ninja that Ninja of the same era looked up to.

But Ye Yu's target was Uchiha Madara and Ōtsutsuki Kaguya of the Fourth Shinobi World War, not Senju Hashirama.

But Ye Yu also knew that Tsunade would definitely not understand.

Because in Tsunade's perception, Ye Yu's strength had already far exceeded her understanding, and she really couldn't imagine there being any Ninja stronger than him in the Shinobi World.

Although Tsunade didn't agree with Ye Yu's words, she couldn't think of how to refute him.

She could only say, "Then you should also pay attention to your safety. Space-Time Ninjutsu is very dangerous."

Tsunade didn't know how to persuade Ye Yu, so she could only say that.

Ye Yu nodded.

After staying there for a while, the three of them returned.

Tsunade originally wanted to go to the casino to play, but because Ye Yu was by her side, she didn't go.

Upon returning to the inn, Shizune saw a note in the room.

"Lady Tsunade, this is bad! Naruto has been kidnapped!"

Shizune shouted.

Tsunade, who was sitting and drinking tea, was stunned for a moment.

"Kidnapped?"

"By whom?"

Tsunade really didn't understand.

Naruto's strength was not weak, and the medicine on him had long since worn off.

Naruto, who had recovered his strength, was at least Jonin level.

Who could kidnap him?

Shizune looked for a long time and shook her head, saying, "It's not written on it."

"It just says to take money to the backyard."

Tsunade pondered for a moment and immediately understood what was going on.

She stood up and sighed helplessly, "What a bother. It must be a debt collector. That Naruto really knows how to cause me trouble."

Tsunade knew Naruto's personality.

He would definitely be convinced by those debt collectors.

Having no choice, Tsunade could only go and explain, otherwise her image in Naruto's eyes would be ruined.

Of course, her image in Naruto's eyes wasn't that good to begin with.

Shizune hesitated, "But Lady Tsunade, we don't have any money left."

Tsunade smiled, "Who said I'm going to pay it back? I'm going to explain, understand?"

Tsunade never intended to pay back the money.

After all, it was money from the casino, and Tsunade planned to default on it.

As she reached the door, Tsunade turned to Shizune and said seriously, "Don't let Ye Yu know about this, understand?"

"But Naruto will definitely tell him."

Tsunade thought for a moment and realized that was true.

"What a bother. Never mind, let's go to the backyard first."

Tsunade carefully avoided Ye Yu.

She was afraid he would find out.

In fact, Ye Yu already knew. Not only did he know this plot, but her room was not far from Ye Yu's room.

Ye Yu's hearing was very strong, and he had heard everything clearly a long time ago.

However, Ye Yu had no intention of getting involved.

In Ye Yu's room.

Ye Yu had finished reading the knowledge about space.

He basically just scanned through books, and his speed was very fast.

After reading, Ye Yu thought, "Combining Sealing Technique and Space-Time Ninjutsu should achieve my goal."

Saying that, Ye Yu pulled out a Kunai and placed it in front of him.

Sitting cross-legged, Ye Yu for the first time began to form hand seals very seriously.

"There shouldn't be any problems, right? If there are, this place will probably explode."

Ye Yu wasn't very confident.

If he made a mistake and triggered a spatial turbulence, the destructive power was unimaginable to Ye Yu.

Ye Yu's hand seal speed was very slow. It wasn't that he was unfamiliar, but that he was unsure.

The next moment, Ye Yu disappeared from the room.

In the primeval forest in the backyard, Ye Yu appeared there.

There were too many people in the town. If he made a mistake, it would cause a lot of casualties, so he could only move to the forest dozens of kilometers away from the town.

Ye Yu continued to form hand seals, a total of 5 seals. Ye Yu took more than ten seconds to form them.

"It must succeed!"

After the last seal was completed, the Chakra in Ye Yu's body suddenly surged wildly.

And a black Space Ball suddenly appeared around the Kunai in front of him.

The black ball was extremely pure black, and black electric arcs were wrapped around its surface.

Ye Yu's gaze narrowed slightly.

"What terrifying Chakra consumption! Such a small range consumed a tenth of my Chakra."

The Chakra consumption of this Ninjutsu shocked Ye Yu greatly.

One must know that his current Chakra volume was second only to the Nine-Tails's Tailed Beast level.

Just a small Space Ball swallowed a tenth of his Chakra, and this Chakra consumption indeed made Ye Yu feel absurd.

Ever since his Chakra surged, he hadn't experienced the feeling of a tenth of his Chakra instantly disappearing for a long time.

The large-scale Ninjutsu he used before, while looking very massive, did consume a lot of Chakra.

But the Chakra consumed was just a drop in the bucket for the current Ye Yu.

Looking at the Space Ball suspended in mid-air, Ye Yu clenched his hand.

Nothing happened.

But Ye Yu knew that the Kunai in the Space Ball had undergone a violent explosion.

The moment Ye Yu let go, the Space Ball rapidly expanded, suddenly swelling into a sphere about one meter in diameter.

Ye Yu's gaze narrowed slightly, "What terrifying power! I can't test it now. If this power is released, I'm afraid it will be far more terrifying than a Tailed Beast Bomb."

Ye Yu's Ninjutsu was to store a huge amount of energy from space. As long as it was released, that energy would be released at hundreds of times the amount of Chakra Ye Yu put in.

One must know that a tenth of Ye Yu's Chakra volume was already comparable to the Chakra contained in a complete Tailed Beast Bomb.

Releasing hundreds of times the energy of a complete Tailed Beast Bomb, Ye Yu wondered what kind of battle would make him use this level of Ninjutsu.

The amount of Chakra Ye Yu inputted was only used to start the Space Ball's operation. The energy released was stored by the Space Ball drawing energy from space.