Obito frowned as his mind quickly ran through the possible reasons behind this change.
After a brief pause, he raised his right foot without hesitation and stomped hard on Rasa's face.
A dull thud rang out as Rasa's cheek slammed against the ground, sending sand into the air.
"You... should understand... your own... place!"
Obito said with contempt, each word squeezed out through clenched teeth.
At the same time, he kept increasing the force under his foot, grinding Rasa's face into the ground.
Half of Rasa's face had already sunk deep into the yellow sand. The rough grains scraped against his skin again and again, bringing bursts of pain.
The pain in his body mixed together with the humiliation deep inside him, crashed over him wave after wave.
Even so, Rasa still refused to submit.
A muffled roar full of anger and killing intent came from his mouth.
"Obito... I'll... kill you!"
At that moment, the fury and hatred inside him burned hotter and hotter, almost swallowing him whole.
And the spiritual power produced by those intense negative emotions was absorbed by the Zero-Tails inside Obito, turning into Dark Chakra.
Obito took a deep breath and felt the endless stream of dark power pouring into his body. A look of satisfaction appeared on his face.
As the Dark Chakra flowed through him, he could clearly feel his injured body recovering at a speed visible to the naked eye.
After getting a taste of this for the first time, Obito's desire only grew stronger.
Not only did he not stop, he pressed Rasa's face down even harder while speaking coldly.
"Someone with your kind of brain still became the Kazekage. You couldn't even control Shukaku, yet you insisted on becoming a Jinchuriki yourself."
"I've never seen an idiot as stupid as you. Hahahaha!"
Rasa's whole body shook hard like he had been struck by lightning.
Deep regret appeared in the eyes half-buried in the dirt.
If he hadn't insisted on becoming a Jinchuriki back then, maybe he could still be living safely in Sunagakure as an elder.
No matter what, he would never have ended up in such a miserable state, like a stray dog cast aside.
And regret, like every other negative emotion, quietly ate away at his heart.
At this moment, Rasa had already fallen into endless self-blame.
Beside him, Obito burst into loud laughter. The sound echoed through the sky as if it wanted to shatter the world itself.
As he laughed, he continued mocking Rasa with vicious words.
"Oh? Let me think. The previous Shukaku Jinchuriki should've been your son, Gaara, right?"
"Hehehe! That's really interesting. You, the father, lose control way more often than your son who's not even ten years old yet!"
"Tsk! Tsk! Look at how pathetic you are. You can't even compare to a child. You're completely useless."
The moment he finished speaking, Obito sensed a powerful surge of Dark Chakra bursting out from his body with incredible force.
Lies don't hurt people. The truth is the sharpest blade.
Because every word struck directly at the truth, it shattered the last line of defense in Rasa's mind with ease.
Back when Gaara was still a child, every day of his life was filled only with endless assassination attempts and cruel rejection.
And the one who gave him all that pain was his own father, Rasa.
Every day, Rasa cursed at Gaara again and again. Words like "trash" and "failure" stabbed into the young boy's heart like knives.
But at that time, Gaara wasn't even ten years old yet. It should have been the age when he received love and care from his parents, yet he suffered treatment worse than human.
Now, the stubborn Rasa believed he could easily suppress Shukaku, but the truth proved how wrong he was.
Shukaku was never something that could be controlled so casually.
In the end, he wound up like this, ["Shukaku, what are you doing? Hurry up and help me!"]
Rasa shouted with all his strength.
On the surface he forced himself to stay silent, but inside his mind he had already been roaring nonstop like a volcano.
Unfortunately, Shukaku knew very well that the enemy outside was Obito. Like a frightened quail, it curled tightly into itself and didn't dare move at all.
After all, it had been controlled by Obito's Mangekyo Sharingan. It knew it was no match for him.
Because of that, Shukaku completely ignored Rasa's cries and had no intention of humiliating itself further.
Rasa screamed in his mind for a long time, but never got any response.
In the end, he could only give up in despair.
Meanwhile, after tasting victory for the first time, Obito never stopped humiliating Rasa even for a moment.
At this point, Rasa's face, half-buried in the dirt, was already covered with blood and tears mixed together.
Were those tears caused by the pain from the sand grinding against his skin, or by the humiliation buried deep inside him?
Maybe only he himself knew.
After a long and painful period of torment, the Dark Chakra that had been continuously pouring out from Rasa suddenly stopped completely.
This unexpected situation made Obito frown, and a bad feeling instantly rose inside him.
Obito quickly stepped forward and roughly flipped over Rasa's battered body.
Rasa's eyes were tightly shut, his face pale as paper. He had already lost consciousness and fallen into a deep coma.
Even though Rasa was a powerful Jinchuriki, he was still only flesh and blood in the end.
After suffering from prolonged exhaustion of spiritual power while also carrying severe injuries that had not healed, it wasn't strange that he finally collapsed and passed out.
In sharp contrast to Rasa, Obito was now full of energy and spirit.
The exhaustion and weakness caused by overusing his power earlier had completely disappeared without a trace.
What replaced it was a body overflowing with vitality.
Obito slowly clenched his fist as the muscles across his body swelled and shrank.
This was the Body Activation Technique.
Another application of Dark Chakra. It could quickly release every limiter in the body.
That included all Eight Gates, even the Gate of Death.
Muscles themselves are strengthened through repeated destruction and regeneration.
As long as one mastered the principles behind medical ninjutsu regeneration, the body could gain stronger muscles while being destroyed at the same time.
Obito wasn't familiar with medical ninjutsu, but he had already learned Dark Medical Techniques from Moryo.
As long as he had enough Dark Chakra, he could rapidly strengthen his body.
"Hu..."
After consuming a large amount of chakra, Obito let out a comfortable breath.
The stinging pain in his eyes had also completely disappeared.
A satisfied look appeared on Obito's face as he reached out and lifted Rasa up.
'Even if you're trash, the Tailed Beast is still useful.'
Then he directly entered the Kamui dimension.