Surviving the Initial Trial in a world like that already proved his Ability.
This was the case because the Starving Ghost was like Ash's Pikachu to Yuusuke.
The Starving Ghost, which had overcome countless setbacks and defeated all kinds of powerful enemies, was instantly killed right in front of Kisaragi Rin, which is why he was so devastated.
"..." Kisaragi Rin's face darkened as he listened.
That the Paradise could even randomize to an Initial Trial like this made him suddenly feel that his S-rank Development Plan might carry some risk.
After a few exchanges, the air between Kisaragi Rin and Yuusuke fell silent.
The next moment, Gilgamesh moved.
The [Akhilleus Kosmos] in her hand suddenly unfolded, blocking a Serpentine Qi Attack from Yuusuke.
It was just a few words of conversation; it wasn't as if they were meeting late and regretting not having met sooner. Kisaragi and Yuusuke would only become more determined to kill the other party.
If the attack did not reach the intensity of an Anti-World Noble Phantasm, no attack could penetrate the defense of this Noble Phantasm.
Now it was Yuusuke's turn to consider how he should face Gilgamesh's invincible Divine Speed and invincible defense.
Taking one last look at Kisaragi Rin's appearance, he once again recited the True Name of the Evil God.
"Tail-Devourer."
This time, he spoke an unknown language.
[Tail-Devourer] is an Evil God, and the mystical language can leverage the mystery belonging to Him.
When this language resonated with the air, Yuusuke's blood began to burn.
Gilgamesh's [King's Treasure] opened again, and hundreds of sword-shaped Noble Phantasms locked onto Yuusuke.
In the next instant, Yuusuke's body was completely torn apart by these Noble Phantasms within the domain of [Time Zero].
However, an attack like this couldn't even kill the previous Steve Rogers, so naturally, it couldn't kill Yuusuke now.
When the damaged limbs finished reconstructing, Yuusuke's body underwent another mutation.
Man-headed and goat-bodied, he stood upright.
His ears were goat ears, but his four hooves gave a sense of error, like a cross between a goat and a human.
"It's nothing more than extreme speed and defense. My blood is already connected to a Divine Being, and His domain is endless Appetite and the Overthrow of Rules."
Ignoring Gilgamesh's attacks, a sharp sound tore through Yuusuke's throat.
He said, "One-on-one combat can trigger the Fifty-Fifty Split. Me fighting a group of them is also considered one-on-one, so I can replicate their Six Dimensional Attributes."
He said, "Tail-Devourer is a Divine Being outside of the world. Since He can descend upon me, He can certainly penetrate the world's barrier."
The next moment, Gilgamesh, who was thinking about which Noble Phantasm to unleash while in Divine Speed, froze. She discovered that the goat-bodied, man-headed Yuusuke had squeezed into the domain of [Time Zero] and glanced at her.
Then.
One of Gilgamesh's arms vanished directly.
"What's happening?"
Before she could react, Yuusuke had already used Divine Speed to turn his head and look toward Kisaragi Rin and the others.
By using Divinity to modify the activation rules of the Inherent Skill - Fifty-Fifty Split, Yuusuke's speed was now equal to Gilgamesh's. Although Gilgamesh didn't understand what had happened at that moment, she knew that the change in Yuusuke's speed must be related to herself.
"Immediately shut down Time Zero!"
As soon as this thought arose, the Time Zero domain centered around Gilgamesh stopped operating.
They returned to a normal flow of time.
Kisaragi Rin only saw that after Yuusuke transformed into the man-headed, goat-bodied form, Gilgamesh's speed suddenly returned to normal, and she was missing an arm.
Yuusuke didn't care about Gilgamesh's quick response; his goal had already been achieved by making Gilgamesh afraid to use Divine Speed again.
Ignoring everything, the domain of [Tail-Devourer] completed its second burst through his line of sight.
The next moment, Divinity activated.
His chosen target was Emiya Shirou!
Because of the Corrupted Holy Grail inside Emiya Shirou, Kisaragi Rin couldn't throw this ticking time bomb without a countdown into the Workshop. After Yuusuke arrived, he and the three Heroic Spirits were standing far away, observing.
One remained in the Golden Coffin.
One came to die.
The other two completed the Descent of [Tail-Devourer].
The Steve Rogers who came to die indeed completed his mission. Through his perspective, Yuusuke had already seen the strangely behaving Emiya Shirou.
"Is this world's Hidden Mission?"
"Let's see if I can detonate it..."
Before Emiya Shirou could react, EMIYA, who had sensed something, already blocked his path.
Unfortunately, Divinity was not something his physical body could intercept. Without even managing to delay it for a moment, [Tail-Devourer], who was projecting His gaze onto this world through Yuusuke, saw the Corrupted Holy Grail inside Emiya Shirou's body.
"Yuusuke, I want him."
The message from [Tail-Devourer] stunned Yuusuke for a moment. Then, he smiled and replied, "Then descend more power upon me."
At this moment, Saber's attack arrived.
Because Yuusuke's body carried Contamination, almost all close-combat methods were rendered useless.
Saber did not attempt close combat. The Sword of Promised Victory converted its Magic Power into a Noble Phantasm Beam, unleashing a liberated Excalibur straight at Yuusuke!
And Yuusuke still ignored all of it.
There was an essential difference in their power.
[Tail-Devourer]'s Divinity was an existence on the level of The Root in the Fate World.
Just as Emiya Shirou rejects all Magecraft due to the high concentration of mystery from the Corrupted Holy Grail inside him, this level of attack could not kill Yuusuke. Even if he were reduced to ashes, the Immortality granted by [Tail-Devourer] was enough for him to reconstruct his body starting from his blood circulation.
"What a pity. The Noble Phantasm capable of severing Immortality has already been used by you all."
"Besides these attacks that cannot kill me, what other counterattacks can you make?"
"Time Stop? It seems you've already used that opportunity elsewhere."
"How about releasing the Starving Ghost, gambling like Russian Roulette that it will kill me first?"
All sorts of thoughts surfaced in Yuusuke's mind. He looked at Kisaragi with a sorrowful gaze, only to see Kisaragi looking back at him with a similarly sorrowful gaze.
"Contempt, disdain, arrogance..."
"Truly, it's quite infuriating."
...Realizing Gilgamesh's defense had been breached, and ignoring Emiya Shirou, who would eventually suffer Loss of Control, Saber deployed [Avalon] to protect the Masters.
The Scabbard, by setting, is even more overpowered than the [Akhilleus Kosmos].
Because Yuusuke was using the Hu Language—a constantly evolving Subspecies from the Mysterious Wei Jin—Kisaragi Rin and the others couldn't understand what he was saying during the fight.
Gilgamesh examined her missing arm. Her Demonic Eye quickly analyzed the principle behind Yuusuke's attack and explained, "The injury he caused is very special. It wasn't severed directly by external force, but rather, it was contaminating my body. The instant I was seen, all the cells in my body fell into a state of hunger. My Magic Power rapidly depleted, and even one of my arms was devoured by myself."
"Cellular Autophagy?"
A term popped into Kisaragi Rin's mind, and he met Yuusuke's gaze.