Supreme Kai World is centered around Supreme Kai Planet, the only planet in the realm, surrounded by countless small suns.
Those present in Supreme Kai World are limited to the Supreme Kai and the attendants responsible for assisting him.
Supreme Kai World is a place where no living beings or souls other than the Supreme Kai can intrude; under normal circumstances, visiting requires the power of Kibito to arrive via Instant Transmission.
East Supreme Kai Shin has a white mohawk, purple skin, wears Potara Earrings, and is dressed in the standard Supreme Kai uniform, with a short stature.
"Lord Supreme Kai, I have discovered that an unknown human has entered the Sacred Realm."
"Kibito, I am aware. Let us go see who it is."
The next second, the two appeared before Sun Wumian and Broly, who had just arrived in Supreme Kai World.
"To think a human has actually trespassed into the Sacred Realm, a place even the Grand Kai cannot enter?" Kibito spoke, while East Supreme Kai Shin merely wore a dissolute, villainous smile.
"I presume you are Lord Supreme Kai. It is a pleasure to meet you for the first time." Sun Wumian maintained his usual politeness. Joking aside, this Shin's combat power has reached 3.6 billion, and he possesses formidable special abilities.
It was far higher than Sun Wumian's current combat power.
"You must be Sun Wumian. I have heard of you," the Supreme Kai said, maintaining his dissolute smile.
"Humans, you had best leave at once. Do you know the consequences of trespassing in the Sacred Realm?" Kibito scolded.
"Oh? And what would those consequences be? I would like to hear them," Sun Wumian asked, feigning ignorance with a half-joking tone.
"Kibito, there is no need to rush them away. At least ask them their purpose for coming here first."
Just as Sun Wumian knew, East Supreme Kai was actually quite interesting; he held the status of a Supreme God, yet lacked the temperament of one, and even lacked the ultimate power.
"Our purpose is simple: we are here to spar with you."
"I heard you defeated Frieza. However, I could defeat someone of Frieza's strength with a single blow," the Supreme Kai said, floating half a meter above the ground, his smile undiminished and his villainous air growing stronger.
"Impressive, impressive. I admire your confidence, Lord Supreme Kai. However, the one who wishes to spar with you is not me, but him—Broly!"
"Enough! A human could never be a match for Lord Supreme Kai. Leave here immediately, or I will not show mercy," Kibito said, losing his patience.
Kibito is getting a bit arrogant, Sun Wumian thought. He only has a combat power of 40 million; I could defeat him just by using Kaioken.
"Is that so? Then how about this? Hah!" Sun Wumian transformed directly into a Super Saiyan. In truth, he transformed primarily for Broly to see.
"What? This is..." Cold sweat broke out on Kibito's forehead. "An incredible power. It is truly hard to imagine this belongs to a mortal."
"Actually, I know that the sealed Majin Buu was left by you on Earth, and Earth is where I currently live. Broly, he possesses unimaginable potential."
Sun Wumian paused and glanced at Broly. "With just a little training, even if a hundred Majin Buu were released, they would be no match for him."
"Is this true? Very well. However, there is no need to fight; just let him shake my hand," the Supreme Kai said, floating over to stand in front of Broly and extending his hand.
"Huh?" Broly looked a bit bewildered.
"Hmm! His strength is indeed high, but..." It was clear that he did not believe a word Sun Wumian had said.
The biggest reason for East Supreme Kai Shin's poor reputation was his lack of insight; he did not know that Saiyans could increase their combat power through transformations.
"Lord Supreme Kai, that isn't right. Broly's combat power isn't visible on the surface. You must at least spar with him to see," Sun Wumian had to remind him.
"Is that so? Since you insist, I shall spar with him. Come."
"But..." Broly hesitated. He disliked fighting, yet his heart craved it; he was a man of such contradictions.
This is so difficult, Sun Wumian couldn't help but complain to himself.
"Broly, you are a Saiyan, a warrior race. Fight boldly, do not shrink back!" Sun Wumian's voice grew louder, attempting to snap Broly out of it.
It worked. Broly charged toward the Supreme Kai, and the battle began.
However, his combat technique was truly unsightly; at first, every move was completely straightforward.
East Supreme Kai Shin had lived for over 50 million years, and he easily suppressed Broly through experience alone.
But Saiyans were born for battle, and Broly was gifted. As he slowly learned combat techniques, he gradually began to trade blows with the Supreme Kai, eventually sending his opponent flying with sheer power.
"What? Has Lord Supreme Kai been defeated?" Kibito was shocked, thinking the battle had ended.
"Kibito, don't worry. It's still early." Shin flew back at an even faster speed. It was clear that the previous exchange was merely a test; he hadn't used his true strength yet.
Sun Wumian also knew this, because Broly had not yet unleashed his Great Ape Power, and his combat power was roughly equal to Sun Wumian's own peak state—far from enough to defeat his opponent.
Afterward, Shin used his full strength, and Broly was once again outmatched.
However, the situation quickly took a turn for the worse. Broly's strength was rising frantically, and he was on the verge of going berserk, controlled by his own power.
First, his muscles expanded, then his pupils turned gold, his hair stood on end, and his aura turned green—he was storing the power of the Great Ape within his human form.
According to Paragus, Broly could not control this power.
His combat power quickly approached 8 billion. Sun Wumian signed in on Broly at top speed and hurriedly shouted to stop him.
[Ding~ Signed in on Broly. Sign-in successful. As the target is a Saiyan, the host's maximum combat power increases by 800 million.]
"Broly, Lord Supreme Kai, stop!"
Fortunately, Vegeta was not here, or no one would have been able to stop Broly, because Vegeta's father had once exiled Broly to a desolate planet—meaning he wanted Broly to die there.
But unexpectedly, Broly's father later arrived and saved him, and from then on, the father and son duo viewed the Vegeta family as their mortal enemies.
"How about it, Lord Supreme Kai? Now you know Broly's potential. And what just erupted was only the tip of the iceberg." Looking at the disheveled Supreme Kai, Sun Wumian smiled, while simultaneously having the system sign in on the Supreme Kai.
[Ding~ Check-in at East Supreme Kai Shin successful. Host's maximum combat power increased by 180 million. Would you like to learn the ability to create objects?]
Unexpectedly, there was a pleasant surprise. The ability to create objects allows one to manifest items using psychic powers, such as the hardest material in Universe 7, Thunderbolt Steel. Of course, he had to learn it.
As expected, with the Super Saiyan Check-in System, combat power just skyrockets. As for training, that sort of thing is too exhausting; doing it occasionally is enough... Sun Wumian thought to himself. Having visited the Supreme Kai World, his combat power had already risen to 1.8 billion.
According to the power levels classified by the system, he was already an expert in the Dragon Ball world who had surpassed the Super Saiyan level.
Eighth power level: Expert surpassing Super Saiyan, combat power range 1 billion - 8 billion.
Ninth power level: Expert reaching Super Saiyan 2 power, combat power range 8 billion - 30 billion. (Lower limit: Cell Games Super Saiyan 2 Gohan; upper limit: not exceeding Buu Saga Super Saiyan 3 Goku.)
.Provided by the great Wumeng Qiankong: Dragon Ball: I Have a Super Saiyan Check-in System