For a ninja, in addition to being seriously injured, losing combat effectiveness is not only in the chakra depletion, energy is also crucial for a ninja, and energy and chakra are also mutually reinforcing!

Of course, this energy refers to the energy of the "spirit", which is not very yellow, very erotic, very violent, very evil, and very ***!

Take Kakashi in the original book as an example, Kakashi, as a powerful ninja with the blessing of many titles such as Kakashi of Sharingan, Kakashi of Copying Ninja, Konoha Technician, Gogo Kai of Hagi, and the Sixth Hokage, his strength is naturally undoubted.

In the early plot of the original book, when Kakashi was the prince of Uzumaki, Sakura Haruno, and Uchiha Nitsuko led the team as a teacher, he met a man called Momochi Zaibu who could be opened to him on a mission to the country of waves.

In the first battle, it took seven days and seven nights to recover from serious injuries, and Kakashi was over-exhausted due to the excessive use of the Sharingan, and he fell asleep for seven days and seven nights!

In the early and middle stages of the original book, when Kakashi had just opened the Kaleidoscope Writing Wheel Eye [Kamui], he fought against the middle two killer Matt Youth Deidara who was shouting "art is an explosion" all day long by the Xiao Organization.

Deidara rode a clay bird flying in the sky to escape, Kakashi ran and chased underground, and from time to time wanted to use [Kamui] to distort space to solve Deidara, and finally broke one of Deidara's arms, and he also overused the kaleidoscope writing wheel eye [Kamui] to cause excessive energy consumption to continue tracking, and Deidara completed a barely five-to-five open!

In the middle of the original book, when Payne attacked Konoha, he also had a five-five relationship with Payne Tendo, and Kakashi relied on a thunderbolt clone, chain bondage play and kunai's technique, so that Payne Tendo admitted that Kakashi was a very powerful ninja.

And the reason for Kakashi's death is also very simple, Payne Shura Dao is all in tatters, and he can squeeze a missile from his body and shoot it at the dead fat man Akido Dingji.

In order to save Akido Dingji, Kakashi forcibly used the Kaleidoscope Sharingan [Kamui] to absorb the missile, causing his energy to be completely exhausted and had to be taken by a dog.

Kakashi's exact words at the time were as follows: "If I do it again, I will run out of energy, which will mean ......"

It needs to be explained here that Kakashi "one more time" means to absorb the missile with [Kamui] one more time......

In the late stage of the original book, the fourth ninja world war Kakashi fought with the controlled tailed beast and Uchiha Obito and never lost, and the tailed beast was five or five, and the Uchiha Obito was five or five.

Even in the final battle against Kaguya Otsuki, Kakashi has shown his decisive role, and he can also come with one or two shots in the face of Kaguya!

Of course, there are many opponents who are open to Kakashi, such as Uchiha Itachi, Kakuto, and Otoshinobi......

This is a very large number, and it is strong to the sixth level, and weak to the ordinary dragon set ninja armor, Kakashi doesn't make much difference when he fights, and this performance is something that no one can do except Kakashi.

Of course, the point is not that Kakashi is in a five-five relationship with whom, but Kakashi's state during the battle, which is basically a lack of energy due to the writing wheel eye or the overuse of **.

This shows the importance of energy for a ninja!

Uchiha Obito is a state of excessive energy consumption, even if he has a very short time with Ai Kato.

……

"Bang!"

With one punch down, Ai Kato's right hand that grabbed Uchiha Obito didn't even shake, and his punch didn't use much force.

However, the power is relative, although it is not too strong for Ai Kato, but for the Uchiha Obito who is under attack, it is enough to break down.

Under this punch, the Uchiha Obito mask shattered instantly, and the not handsome half of his face was also instantly swollen, and his mouth was directly hit until he was bleeding profusely.

Without stopping, Ai Kato punches again!

"Whew!"

This punch is empty, and even the Uchiha Obito that he grabbed with his right hand turned into air!

After Uchiha Obito was punched, he finally lifted his spirit to complete the void again, avoiding being slapped in the face by Ai Kato again, even if he knew that he couldn't escape from Ai Kato's hands, he had to make the attitude he should have.

And the fact is also the same, it is impossible for him to escape the clutches of Kato Ai when he is in a full state, not to mention that now his energy and writing wheel eyes have been consumed to a large extent.

……

Twenty minutes later.

The Uchiha was lying on the ground with an inhuman, his whole face swollen and he couldn't tell who he really was.

He was stunned by Ai Kato!

In the face of Ai Kato's crazy offensive, he could barely resist at first, but he didn't know what was going on in the back, but it hurt a lot!

"Anyway, you're also the villain of the first and late stages of the original book, how can you do it without fighting?" Ai Kato sighed, squatted down and directly used the [Palm Immortal Technique] to treat Uchiha with soil.

With Uchiha Obito's current injury, if he is not treated, even if he has the terrifying ability to recover the first generation of cells, it will take half a month to fully recover.

Four days later, it's the time for Uchiha Obito and Kurojuto to make an appointment to meet, and Kato Aiko can't let Uchiha Obito meet with Kurojue in an injured state, which is very bad and disrespectful to each other's performance.

Of course, now Uchiha Obito is 'in default', and he didn't promise to assist Kato Ai in black!

Maybe it's because the beating is too serious, even if Ai Kato used medical ninjutsu to recover Uchiha Obito's injuries, Uchiha Obito only woke up after a full five hours, and these five hours of deep sleep allowed him to recover a lot.

When the two met, it was one o'clock in the afternoon, just in the afternoon after lunch, the sun was shining, and now it was close to seven o'clock in the evening, and it was already half dark.

"Huh?"

Uchiha Obito slowly opened his eyes and looked at the somewhat dim sky, because he had just woken up, and he hadn't been able to react in time to what kind of situation he was in now.

But in the blink of an eye, the sky in front of him was blocked, and it turned into a handsome face.

This face is Ai Kato, no doubt about it!

The moment he saw Kato's face, he remembered everything that had happened before!

He was knocked out alive by Ai Kato with his fists!

Being beaten so humiliatingly by Ai Kato made an extremely angry emotion spread in his heart!

"Bang!"

Before he could react, a fist as big as a casserole slammed into his face again.

……