On July 24, after a series of complicated examinations at the hospital, Kusuo Uchiha said goodbye to the days when he could be lazy and fishing.

Although the result is a relatively high-level secret, most people don't know it, but he can no longer use the excuse of being in poor health to be lazy.

Even Kakashi was told by Itachi that his body was fine, so don't train him politely.

Kusuo Uchiha and a bewildered Kakashi stared at each other in silence.

"Ahem, that's the case." Kakashi coughed, scratched his forehead, and said, "Let's finish the thunder today, and go to register tomorrow, otherwise we'll have to wait another two days." After registering for Thunder, it's time for you to concentrate on learning Chidori as well. ”

Kusuo Uchiha nodded.

Sasuke is practicing Chidori next to him, and it's already on a certain scale.

Naruto and Jiraiya were not there, and it is said that Jiraiya took Naruto to a special training on spiritism.

Iara, who is not there either, is said to have not been here since he found out that Kusuo Uchiha was gone.

Even the girls who often come to the waterfall to play in the water are not there.

Uchiha Kusuo glanced at the remote surroundings, and a flash of inspiration suddenly flashed in his mind.

[Kakashi-sensei, I actually feel ......] Uchiha Kusuo looked at himself, trying to make a look of annoyance and confusion, and said, "I feel as if something is not right with me? ]

"What's wrong?" Kakashi was serious, "What's wrong?" Body? Or chakra? ”

[I'm not sure to say, I should say that there seems to be something wrong with thunder, right?] Kusuo Uchiha stretched out his hand at the barren mountain that had been split twice and turned from a high mountain to a small hill: [It's hard to describe, I'll show you.] ]

"Wait." Kakashi grabbed him and frowned, "Is it dangerous?" Didn't you suddenly have an idea and do it when you thought of it, right? ”

[There's no danger, I feel like I'm able to control it, it's just a little weird, so I wanted you to take a look.] Kusuo Uchiha said.

Kakashi let go, he thought that Kusuo Uchiha was a very steady and intelligent person, and since he said so, then he could be trusted.

Sasuke didn't come over this time to join in the fun, his Chidori had reached a very critical moment, and he had lost his freshness to his brother's thunder, after all, he hadn't even learned Chidori until now, let alone Rachel and Thunder.

Sasuke thought as the thunderbolt disappeared and turned to his brother with a sigh of relief......

"Boom!" A loud sound that almost split the heavens and the earth almost shook his soul away, his ears and brain roared continuously, and his eyes were even darker, and his vision was instantly spent.

"What-" Sasuke covered his eyes and half-knelt down and shouted, "What's going on?!" ”

Kakashi, who was opening the writing wheel and looking carefully, was almost blind at this time, and he was half-kneeling with his eyes covered in the same posture as Sasuke.

Kusuo Uchiha, the only one standing: [......]

It seems like...... Again...... Overdone......

It took nearly a minute for Kakashi and Sasuke to fully recover and stand up together to look at the place where the thunder had fallen.

The barren mountain, which had suffered so many disasters, was completely gone, leaving behind a huge crack in its place, and all the surrounding grass and soil had turned into a charred black unidentified object, the crack was huge and bottomless, and it was emitting a trace of black smoke, like a ghost from the depths of hell.

"Nan...... Kusuo ......" Kakashi looked at him with a slight tremble, his pupils shook, "What is this move of yours?" ”

[Just...... It's just thunder. Uchiha Nan is ambitious.

"You say this is also a thunderbolt?! What a joke! Sasuke shook his shoulder like crazy and said, "What is this?" How exactly is this done? That's an exaggeration, isn't it?! How many chakras do you have! ”

Uchiha Kusuo's eyes lit up, and he fell on Sasuke, scaring Sasuke and Kakashi's souls back immediately.

"Kusuo?!"

[It's okay, it's just a little dizzy, the body has no strength, it should be that the chakra has run out.] Kusuo Uchiha sat on the ground and said.

Kakashi checked him, breathed a sigh of relief, and sat down on his left and said, "Of course, this is also true, after all, that jutsu just now is really scary, and the consumption of chakra by such an exaggerated jutsu must be very amazing, okay, now let's talk about what the hell is going on." ”

Sasuke also breathed a sigh of relief, sat on his right and stared at him, "You secretly did the experiment again last night?" ”

Kusuo Uchiha, who was caught in the middle and subjected to the questioning of the two: [......]

[I'm not, I don't.] He retorted to Sasuke first, after all, this brilliant idea had just come up with it.

[It's hard for me to say, since my body healed, I felt that the chakra in my body had changed, and then my perception of the energy in nature has also increased, and my control has also increased.] Uchiha Kusuo began to talk nonsense seriously, [That was really thunder just now, but it was just the result of compressing and strengthening the original thunder. ]

Kakashi and Sasuke: "......"

[This technique is more chakra intensive than before, and I can barely extract a single chakra in my body now.] Uchiha Kusuo said "weakly".

Kakashi's face gradually became serious, and he said, "Kusuo, don't use this technique in the future, the thunder before is fine, but this thunder can't be used if it's not in a critical moment, you know?" ”

Kusuo Uchiha nodded vigorously.

Kakashi sighed, "Black lightning...... I'm afraid this will be listed as a forbidden technique, right? ”

As Kakashi said, and as Uchiha Kusuo had planned, Thunderbolt was rated as an S-rank ninjutsu, and the improved Black Thunder was designated as a forbidden jutsu and would not be open to others, and he himself had to use it with caution.

Naruto, who came to join in the fun and wanted to register the art of seduction and the art of the harem, was in a trance.

However, his seduction technique and harem technique were also included in the forbidden arts.

Kusuo Uchiha: [......]

In a way, it's taboo.

"Humph! I have two forbidden spells! Sure enough, I'm even better! Having said that, Naruto himself knew that the forbidden places of the two sides were completely different, not to mention that he also watched the scene of Kusuo Uchiha using black thunder with the evaluators.

It is said that the test room that can completely isolate the chakra has been completely destroyed, and it is said that it still used thunder, which consumed a lot of chakra's results, and the complete chakra Shi exhibition is even more terrifying.

Uchiha Kusuo is the most satisfied, in the eyes of others, there is only one S-level thunder that he needs to care about at most now, and he will only have this one move in the future.

The current forbidden art has been strictly protected after the incident between Orochimaru and Naruto, and as long as you don't talk nonsense, no one will know.

Even if something accidentally happens in the future, it can still be turned into a forbidden art and sealed.

It was perfect, thanks to the second Hokage for the inspiration.