When Yu Zhibo had not yet reached the level of法则 (fǎzé - law/principle), he needed to request permission to use the Flying Thunder God Technique to teleport to Wang Shouyi's side.
This was because powerful individuals, upon reaching the semi-S-rank, had their comprehension of space and their Heavenly Connection sense elevated to the extreme of A-rank. Within their vicinity, they formed their own domain, and when the gap in strength was extremely large, even the Flying Thunder God Technique could not break through the domain's blockade.
Currently, Uchiha Madara was also at the peak of the 99th tier, and Yu Chengsong was by his side, so naturally, a request was necessary.
"What's wrong?" Yu Chengsong noticed the change in Uchiha Madara's expression and couldn't help but ask.
Uchiha Madara showed a slightly speechless expression. "Are you carrying an item inscribed with your brother's Flying Thunder God mark? He's trying to use the Flying Thunder God Technique to come here... and he's bringing your sister too."
Upon hearing this, Yu Chengsong's face showed an expression of annoyance. "What are they doing here? Don't they know the Eternal Night World is very dangerous? They absolutely cannot come."
As siblings, they naturally kept each other's Flying Thunder God Technique marks on items, precisely so that if they encountered danger one day, they could quickly reach each other to provide rescue.
However, in the current situation, Yu Chengsong clearly did not want them to come.
"The Eternal Night World is dangerous?" Uchiha Madara looked at him with a half-smile, feeling that his disciple was quite biased.
However, it was understandable. Just like when he was young and yearned to go to the battlefield to kill enemies, but did not wish for his brother Izuna to fight the enemy, Yu Chengsong clearly had the same mindset.
Shaking his head, the light of his Rinnegan flashed, and he unhesitatingly rejected Yu Chengze's Flying Thunder God request.
But in the next second, he felt an extremely subtle energy break through his domain's blockade, and then two familiar presences forcefully intruded.
Beside Yu Chengsong, one tall and graceful, the other slender and tall, stood hand in hand. It was none other than Yu Chengze and Yu Shuya.
Uchiha Madara's pupils constricted as he stared at the Mangekyo Sharingan pattern in Yu Chengze's eyes. "Your eyes..."
Looking at Yu Chengze's Mangekyo Sharingan, Uchiha Madara couldn't help but recall his ancient ancestor, Uchiha Shigen, whose Sharingan also had a clover-like pattern.
However, there were no records of that ancestor's Sharingan abilities. In the anime, it was only mentioned that Uchiha Shigen used Izanami to save his clan members, but his specific abilities remained a mystery.
Uchiha Madara did not expect his ancestor's eyes to appear on the young man before him.
But after some observation, he quickly sensed something unusual about Yu Chengze's pupils. The other party's pupils were not black but silver-white.
Recalling the energy that surged when Yu Chengze broke through his domain's blockade and forcefully used the Flying Thunder God Technique to teleport over, Uchiha Madara couldn't help but show an expression of interest. What exactly were this kid's abilities?
Yu Chengsong quickly asked the question on his mind:
"Xiao Ze, you've awakened your Mangekyo? What are your abilities?"
Yu Shuya stood beside Yu Chengze, looking somewhat indignant. Among the three siblings, she was the only one without a Sharingan, which made her quite upset.
But she still looked at Yu Chengze curiously, as her second brother had never told her about his abilities either.
Facing the inquiring and surprised gazes of the three, Yu Chengze showed an arrogant expression. Da Feng Novel Network.
Rarely did he show off in a boisterous manner. He simply coughed lightly and said indifferently, "Big brother, you're really impolite. Can you casually reveal the information of a transcendent being? I can trust your teacher Madara, of course, but what if there are unknown existences hiding nearby, eavesdropping? The Mangekyo Sharingan is my trump card, I can't just blurt it out."
Uchiha Madara was rendered speechless and shook his head with a smile.
Yu Chengsong was amused to the point of anger. "So much nonsense, you haven't even figured out your own abilities, have you? And you're making it sound so convincing."
As brothers, if anyone in the world understood Yu Chengze, it would be him and no one else.
Yu Chengze chuckled, scratched his head, and said, "It should be related to space, but there are other abilities as well. I'm still exploring them. I'll tell you when I understand them."
His Mangekyo Sharingan awakened upon learning that his father, Yu Zhibo, was in the Eternal Night World. He wanted to quickly reach Yu Zhibo, so he awakened such abilities. As for others, they should be related to the fusion of energy, and he would need to reach the level of 法则 (fǎzé - law/principle) to explore further.
Yu Chengsong nodded, then sighed. "You shouldn't have come. The Eternal Night World has many S-class creatures. Even Teacher Madara can hardly protect us. If you both come, Grandma, Grandpa, and Maternal Grandparents will worry so much. Listen to me, go back quickly!"
"I won't!" Yu Chengze said indignantly. "I've awakened my Mangekyo, so why can't I come if you can come!"
"Then why did you drag little sister along!?"
"She was so annoying, crying all the time, and wouldn't let go of my hand no matter what. What else could I do!" Yu Chengze said, raising his hand and giving Yu Shuya a flick on the head. He didn't want his sister to be in danger either.
"She misses Daddy!" Yu Shuya covered her head with both hands, her eyes teary. Seeing this, both Yu Chengsong and his brother's hearts softened.
Yu Chengsong was somewhat helpless and looked at Uchiha Madara. "Teacher Madara, please protect us from now on."
Uchiha Madara's lips curved slightly. "As your teacher, and also as half a teacher to Xiao Ze and Xiao Ya, protecting you is what I should do. But in reality, you don't need to worry too much, because even if we encounter an S-class..."
A look of confidence appeared on Uchiha Madara's face. "I can enter the same level at any time. The S-class creatures born in this decaying world are very weak!"
After speaking, Uchiha Madara was momentarily lost in thought. When he regained his senses, his expression had become somewhat complex.
In his mind, the electronic notification sound of system information echoed: [Detected that the host has the intention to advance to S-rank. As S-rank individuals are not allowed to enter Earth again, this action contravenes the mission requirement of protecting Earth. The host's level has been suppressed to the maximum of semi-S-rank.]
[Note: The host's arrival has been notified to the Main God. Please wait at your current location with the Main God's three children and do not move around freely!]
"Damn system!"
Uchiha Madara cursed under his breath, but he couldn't muster any thought of defying the system. This was because their existence was granted by the system, and even their thoughts could be arbitrarily controlled.
This control was far more comprehensive than Edo Tensei.
Uchiha Madara helplessly used Wood Style to create a large villa underground and waited silently with the three siblings.
Meanwhile, on the other side.
Yu Zhibo, who was breaking into a folded space to search for the giant tortoise Tuolu, suddenly stopped. After receiving the system notification, a gentle smile suddenly appeared on his lips.
"These two brats!"
He couldn't bear to scold his daughter, so it must have been these two brats who brought their little sister along.
Thinking of this, he also felt a sense of urgency. His figure flickered, and he disappeared from his original spot.