After using the Reverse Summoning Technique, Ryuu appeared in the throne room he was last in, the room was empty and there was no one in it but Ryuu.
Suddenly two guards entered the room and surrounded Ryuu and they wanted to attack the intruder, but one of them noticed Ryuu's face, and stopped the other guard, "Stop it's Ryuu-sama."
"I'm looking for Sho-sama or Shoichi-san where are they now?" Ryuu inquired where Sho or Shoichi was.
"Sho-sama is in seclusion right now so I don't think you can meet him, but Shoichi-sama is training with his son right now. Let me take you to him." One of the guards told Ryuu to follow, so Ryuu went with him.
The guard led Ryuu down to the fourth floor, opened the door to one of the rooms there and entered, followed by Ryuu inside. As soon as Ryuu entered he saw a scene similar to the fifth test, there were many doors around the room.
The guard walked up to one of the doors, then pointed at him and said to Ryuu, "Enter this door. It will take you directly to Shoichi-sama's training logic."
'Do all these doors have a spacetime ability.' Ryuu thought.
When the guard noticed that Ryuu was thinking, he guessed what he was thinking, "All these doors are connected to different places by a very complex seal of space-time, which makes it easier for us to move to different places."
"This is really amazing and useful," Ryuu was really impressed with the person who came up with this idea, 'I wonder if they will let me see how it works, maybe I can apply such a method in Konoha. It will be very useful for the village especially in wartime.'
"I'll go now. I have to get back to work," said the guard, after which he went out of the room.
After the guard left, Ryuu opened the door and entered, as soon as he entered the space in front of him began to distort and in moments he was transferred to a very large training ground almost 100 times larger than the seventh training ground in Konoha.
As soon as he moved he saw two giant nine-tailed foxes fighting fiercely. But they stopped fighting after a while after Ryuu appeared, because they noticed his presence.
After a while, they both transformed into human form, and approached Ryuu, then Shoichi greeted Ryuu and introduced his son, "Hey Ryuu, I didn't expect you to come back here so quickly, anyway this is my son."
"Hi, my name is Shoda, nice to meet you." Shoda said with a small smile on his face and reached out to shake hands with Ryuu and Ryuu did the same.
Shoda appears to be 20 years old, with long yellow hair with silvery ends and blue eyes. He wore his hair tied back in a low ponytail, with bangs framing a neat, handsome face. He is tall and wears clothes the same color as his eyes with silver trim.
"So Ryuu, do you need something back here?" Shoichi asked Ryuu, because he didn't expect Ryuu to come back here, because he went yesterday at night and came back today in the morning which made him surprised.
"Shouldn't you ask if Sayuri came back before asking that?" Ryuu asked Shoichi in amazement.
When Shoichi and Shoda heard Ryuu's question, they laughed wildly, and Shoichi said, "Hehehe, I know my daughter well, she won't come back so quickly, it must have been when you told her you wanted to come back, she refused to come back with you."
"Tell me what you came for," Shoichi said after he finished laughing.
"I came here to learn Sage Mode." Ryuu said what he wanted straight away.
"In order to learn Sage Mode your amount of chakra must be very high and secondly your body must be strong enough to withstand the increased force from its use." Shoichi began by explaining the requirements for learning Sage Mode.
"I can sense your huge chakra amount and it's suitable for learning Sage Mode, so let's check if your body is strong enough." Shoichi spoke as he walked towards Ryuu and grabbed him by the shoulder and then sent a very strong pressure on Ryuu's body.
After a minute, Shoichi took his hand off Ryuu's shoulder, "Your body is strong enough too, so do you want to start learning now?"
"Yeah let's start now I'm looking forward to this." Ryuu was excited to start learning Sage Mode.
"Good, sit in whatever position you think is comfortable, I will collect and intensify some natural energy in your sitting area so that it is easier for you when you sense it, then try to bring it into your body and try to combine it with physical energy and spiritual energy, and you have to make all three energies balanced."
Ryuu sat in the lotus position. After seeing that Ryuu had sat down, Shoichi entered Sage Mode without meditating and in a short time as if something natural like breathing then collected natural energy in the area where Ryuu was sitting.
The Nine-Tails Fox Clan had nothing similar to Mount Myōboku's frog oil so they developed a natural energy gathering and condensation technique to make it easier for their smaller clan members to learn Sage Mode and Senjutsu.
Once Ryuu sensed the natural energy around him and tried to draw it into his body, after moments of trying he was able to absorb it into his body and slowly fuse it with his chakra.
Once the natural energy entered Ryuu's body, he lost control and his body started absorbing natural energy in large quantities, as if his body was a person in a desert and the natural energy was water. Once he found the natural energy, he began to absorb it fiercely.
'What's going on, I've never seen anything like this before, I should try to stop it' Shoichi was trying to quickly get close to Ryuu to get the natural energy out of his body, but he was a little late.
Ryuu's hair turns silver, and Ryuu gains a silver chakra shroud that forms fox ears and nine tails. The color of the sclera turned yellow, and its iris turned into a shape resembling the iris of a fox, and it had fangs and claws.
Shoichi was shocked seeing Ryuu's current form, he had expected Ryuu to turn into a stone statue due to excessive absorption of natural energy, but this did not happen, Ryuu's body automatically balanced the natural energy with physical energy and spiritual energy and expelled the excess natural energy from his body.
Ryuu looked at Shoichi and moved very quickly towards him and used his claw to try to hit Shoichi's chest, Shoichi noticed Ryuu's movements so he crossed his arms in front of his chest to repel Ryuu's attack, the force of Ryuu's strike is so strong that it made Shoichi back 5 steps.
'Looks like he's completely lost control of his actions, I have to get the natural energy out of his body quickly.' As Shoichi thought about this, a red-haired youth appeared behind Ryuu and placed his palm on Ryuu's back. Within moments, all the natural energy came out of Ryuu's body, and he was Lost consciousness.
"Oto-sama, haven't you been in seclusion,I thought you wouldn't go out for a month or more" Shoichi spoke to his father.
"I sensed that the natural energy in this area was turbulent so I used the spacetime ninjutsu to move right here." Sho spoke seriously and then looked toward Ryuu who lost consciousness, "We must train him well so that he doesn't lose control again from absorbing natural energy."
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