"What?" Kakashi asked with some doubts.

"The truth is, Kurenai is currently practicing Genjutsu technique, I hope you can help her practice it."

Asuma is quite embarrassed to say that, after all, his relationship with Kakashi is not that deep, and it sounds wrong for him to ask for Kakashi's help like this.

But for the sake of Kurenai, Asuma still try to ask Kakashi about this.

There aren't many people in Konoha who are good at Genjutsu. Originally, Kurenai's father is a good one, but he died in the Kyuubi's attack a few years ago, so no one can teach Kurenai about it.

The reason why Asuma tries to ask Kakashi is because Kakashi owns a Sharingan. Even if he didn't specialize in Genjutsu, his skill in Genjutsu must be not low.

Of course, as long as an Uchiha clan member has opened their Sharingan, their skill in Genjutsu will increase.

This is the strength of a Kekkei Genkai, so there is no use to envy this kind of ability.

As for why Asuma is not looking for Uchiha clan member, the reason is very simple.

It is because that Uchiha clan is full of arrogant peoples, so there is no way for them to teach Kurenai about Genjutsu. They will just only mock them about it.

Asuma and Kurenai are not stupid, naturally they will not do such stupid things.

"Asuma, you…"

Kurenai is quite moved to see Asuma actually tried to ask Kakashi. Before, Kurenai told Asuma that she encounter some problems learning Genjutsu. She didn't expect Asuma to remember it, which made the Kurenai very touched.

Kakashi looked at the two people and made Asuma and Kurenai nervous. They are scared that they will be rejected by Kakashi.

Asuma and Kurenai's impression of Kakashi still stayed the same as before the Kyuubi's attack, so it's no wonder that they think that Kakashi will reject Asuma's request.

Kakashi eyes turned crescent and said, "Yes, but my Genjutsu skill is also normal. I don't know that it will be helpful or not, but I will try to help you."

Seeing Kakashi agree, Asuma and Kurenai's face are full of joy.

"It's okay, it doesn't matter if it doesn't work." Kurenai said quickly.

"In that case, let's go to the seventh training field." Kakashi said.

"Okay."

"Yosh! For youth! Let's go!"

Then the group of four people moved towards the seventh training field.

At the seventh training field.

"Kurenai, now try to use your Genjutsu on me, I will try to see the problem."

"Okay!"

Kurenai nodded, then she forms some hand seals and muttered: "Demonic Illusion: Tree Binding Death!"

After her voice fell, there is a big tree behind Kakashi. The vines are constantly extending, and Kakashi is tied in the tree trunk, and then the Kurenai figure disappears like a bubble.

In the next second, Kurenai emerged from the tree trunk and appear near Kakashi's head.

"Okay Kurenai, I understand the problem now."

Kakashi's faint voice came out, and Kakashi immediately surging his chakra and he was released from Kurenai's Genjutsu.

"This..."

The Kurenai could not help but shocked. Although she still hasn't completely mastered the Genjutsu, Kakashi actually defeat her Genjutsu in a flash. It feels so terrifying to her!

"So Kakashi,what is the problem?"

Seeing Kurenai still silents, Asuma has asked the question first.

Kakashi smiled and said: "Kurenai's Genjutsu is visual type Genjutsu, so when she wants to use it, the opponent must look at her, which is already a big restriction. Of course, this is just an aspect."

"On the other hand, when the Genjutsu was exhibited, it was tree-based attack, first it bounds the enemy, and then she physical attack them. The idea is good, but the speed at which the trees bound the enemy was too slow. Once the enemy discovers that it is a Genjutsu, they will try to break it as fast as they can."

"And, once the tree appears, the enemy can easily realize that they are in Genjutsu. After all, there is almost no one who can use a Wood Release, so they will assume that they are in Genjutsu."

"The most important point is that your Spiritual Force is not formidable enough Kurenai. Genjutsu needs Spiritual Force, and your Spiritual Force is not enough to cast this level of Genjutsu."

Kakashi spoke a little bit of his thoughts about this Genjutsu. In fact, it is concluded that the Kurenai's Spiritual Force is not enough, so she can't completely master this Genjutsu.

In general, unless there is a special method, Shinobi's Spiritual Force can only increase with age.

Kurenai thinking for a while after hearing this, she then said: "It turns out that when my father told me that I can't use this Genjutsu is because my strength is still not enough. I first though that he just doesn't want me to use this Genjutsu."

"So, your current objective is not to learn any new Genjutsu, but to constantly train your own Spiritual Force, I believe that there is some method to practice Spiritual Force. Yūhi Shinku-Senpai should have told you about it."

Spiritual Force's training method is a secret technique of a clan. It usually only passed down in their own clan member.

These methods are similar to each other and have the effect of improving the Spiritual Force, the difference is just whether the increase is big or small.

According to Kakashi, the one who got the best Spiritual Force's training method in Konoha should be the Yamanaka clan. Their Spiritual Force is strong enough to let it fly out from inside their body. Their Spiritual Force strength is awesome.

Kakashi is very interested in these training methods, after all, the growth of Spiritual Force is also good for his Chakra's growth.

Kurenai is feeling embarrassed after hearing this and she then said: "Kakashi, father does have a Scroll that records the training method of Spiritual Force, but…"

"But what?"

Kakashi asked curiously.

"But I don't understand."

Kurenai said that as she starts to get more embarrassed.

"What?"

Kakashi was shocked after hearing this, 'How is it possible? How can Yūhi Shinku give Kurenai a scroll that she doesn't understand? This is strange.'

"The Scroll is really weird, Kurenai has shown it to me once, and I also didn't understand it."

At this time, Asuma who is at the side said to Kakashi.

"This… although it is a bit embarrassing for me to ask, can you show me it?"

"Of course you can."

Kurenai doesn't mind this kind of thing as she just takes the Scroll out and give it to Kakashi.

After all, she can't understand what is written in there. If Kakashi can understand it, then Kakashi can teach her about it.

As for Kakashi's looking at the secret art of Yuhi clan, she doesn't mind it at all.

After all, now there is only her alone in the Yuhi clan, so she didn't care too much about letting Kakashi looks at this secret art.

Kakashi hearing this feels a little excited and take the Scroll.

Spiritual Force's training method? This is an area that Kakashi has not set his foot on.

Because Kakashi is now a fusion of the two souls, his Spiritual Force is far more than the average person, but if it can grow even more, it is also worth trying to learn about this.

For this kind of think, Kakashi knew that there is no such thing as too much.

After taking the simple and unadorned Scroll, Kakashi found that the scroll is old. The scroll should not be written by Yūhi Shinku, otherwise it would not be so worn out.

This Scroll seems to have at least a hundred years of history.

With curiosity, Kakashi opened the roll of Scroll.

"This is..."

After looking at the contents of the scroll, Kakashi can't help but widen the right eye!