Hiken!!

Just when Ryuu tried to use the ability of Mera Mera no Mi, the door of the yard was pushed open and a figure appeared outside the door.

The person standing outside the door is not tall, but taller than Ryuu, and the cheeks are equally tender, a 6 year old child.

This person is Hatake Kakashi, who is the brother of Ryuu. It has not been long since he became a Genin, but he has become the youngest genius in Konoha.

While pushing the door open, Kakashi saw that Ryuu was using the flame and could not help but be surprised.

"Ryuu, have you started practicing Ninjutsu?" Kakashi came in and asked.

Kakashi loved his younger brother, is very concerned. After all, he has only one younger brother.

"Yeah, I feel that the timing is right, I started to practice Ninjutsu." Ryuu dissipated the flame in his hand and said with a bright smile.

He can't say that this is a devil fruit ability, making it not so easy to explain.

"You didn't take long to practice ninjutsu, you have already achieved this effect, and the progress is very good." Kakashi patted Ryuu's shoulder and said with encouragement.

"Brother, don't underestimate me, maybe I can even beat you in a match." Ryuu looked at Kakashi and said slowly, showing a bright smile.

Ryuu now has devil fruit power, and his excited heart has yet to completely calm down. He want to try it out.

"Ryuu, self-confidence is a good thing, but being over-confident is not good. You are two years younger than me and right after practicing ninjutsu, to feel that I can be your opponent, it means looking down on me. I already graduated from Ninja Academy and became a Genin." Kakashi looked at Ryuu and said seriously.

No matter how you look, Kakashi thinks that Ryuu is bragging, and the latter wants to beat him? That is impossible, at least not now.

"Brother, we haven't sparred yet. How do you know I can't defeat you?. Although you are a genius, I am also a genius." Ryuu still firmly believes in his thoughts and doesn't feel that he said anything wrong.

"Since you think so, then let us learn from each other." Kakashi stepped back a few times and said.

"Yes, Let's do this!!." Ryuu is not afraid at all, and was excited.

"You have to be careful, Here I come." Kakashi said and prepared for the battle.

"I will not be polite either, be careful." Ryuu said.

Ryuu's right hand waved, and a flame coming out of it, like a raging wave, wrapped him in it and confronted Kakashi.

Kakashi was surprised seeing that Ryuu exhibited such a flame and it was easily manipulated by Ryuu wrapping around his body. He did not expect Ryuu's ninjutsu to be so strange.

"Ryuu, this fire and ninjutsu is so strange, the flame is actually being manipulated by you, is it your own ninjutsu?" Kakashi looked at the surging flame, and asked.

"Yes, this is the Katon I have tailored for myself." Ryuu nodded.

"You are only four years old, you can create your own ninjutsu, it is amazing, if the news is spread out, it will inevitably start huge waves." Kakashi said surprised, couldn't believe what he heard.

To be able to create your own ninjutsu at the age of four is not simply a genius, it is a monster level existence.

"Brother, are we going to start now?" Ryuu urged.

"Then, be careful. I am coming." Kakashi said.

The next moment, he acted, not directly rushing to Ryuu, but circled around the latter, looking for flaws, and then launched an attack.

After Kakashi moved around Ryuu for two laps, he found the flame floating around Ryuu, some distance from the latter's body. It is not a simple matter to easily break into the flame.

"Brother, if you don't come, I have to go to you." Ryuu said, without hesitation, immediately rushed toward Kakashi.

As he rushed over, the flames followed and turned, looking very strange and strong.

Ryuu rushed over, and it was a fist along with the flame, form a fire fist, and attacked Kakashi.

The power of this fist is not very weak for Kakashi, which surprised him. He did not expect that only four-year-old Ryuu would have such strength.

Kakashi did not struggle, quickly traversed his body avoiding the attack.

"Brother, you really surprised me, you taijutsu became so strong." After Kakashi evaded the attack, he did not forget to appreciate Ryuu.

"That is natural, brother, you have to be careful, otherwise you will be defeated by me easily, you can lose face." Ryuu said.

When he spoke, he didn't pause. He had turned around and launched an attack again. It was fast and his power was equally good.

Since Ryuu began to practice, he has been tempering his body and practicing his taijutsu, making him fast, not weaker than Kakashi, and his devil fruit ability, makes the attack complement each other.

"Hiken!"

After several consecutive attacks, Ryuu successfully locked Kakashi, without hesitation, bursting out a flame, forming a huge flame fist, whistling to Kakashi, like a giant beast, approaching fast.

Seeing the huge fire fist, Kakashi widened his eyes, felt great pressure, and even had a sense of crisis.

He quickly regains his composure and runs Chakra, his hands quickly print and slam to the ground.

"Doton: Mud wall!"

As he finished his jutsu, the ground in front of Kakashi immediately rolled up to form a solid mud wall that stood in front of him and resisted the fire fist from the bombardment.

Boom!!

Fire fist bombarded the mud wall, directly smashing it and continued forward attacking Kakashi.

Kakashi was really surprised at this. He did not think that Ryuu's was so powerful that he defeated his defense.

Watching the fire fist continue to attack, Kakashi did not panic, he did not seem to escape allowing the fire to drown him.

Seeing the fire drowning Kakashi, Ryuu slightly raised his eyebrows and looked tensed, knowing that things were not so simple, as Kakashi could not be defeated so easily.