Justeaze Lizrich von Einzbern was born to become the core of the Greater Grail to retrieve the lost Third Magic — Heaven's Feel — back to the three Families.
Along with Zouken Matou and Nagato Tohsaka, it was she who had devised the ritual, creating the Holy Grail War System.
She was the first Homunculus of the Einzbern family, and all further Homunculi, up to Illya's mother, were made in her image.
It was her will to save the entire human race that was instilled into the Holy Grail System, without which, the Holy Grail would just be a Holy Grail.
After she had sacrificed herself to begin the ancient ritual of gathering magical energy through a Servant-Master system, she had ceased to exist, becoming the core of the Greater Grail.
However, to say that she had died would be a matter of debate.
Justeaze could still manifest, especially within the Einzbern Homunculi or within the Einzbern Castle, if she wished so.
More often than not, despite her cold and aloof personality, she cared for what individuals like Kai wanted to achieve through the Holy Grail War.
Black looked at the magical existence standing in front of him and smiled, stepping forward.
He closed his eyes.
With another step, those eyes opened, yellow crystals dancing within them.
What Kai wanted to achieve in this world, through this world, by merging it with Verse Fusion and Harry Potter timelines, nothing would be possible if he didn't get the Greater Grail's nod regarding it.
So, Black said the words that he really meant from the heart. "Salvation, my lady."
Yellow Crystals danced in Justeaze's red eyes as she heard the grand proclamation.
Little by little, as Black approached her, those Crystals began oozing out information that he hadn't shared with anyone. Anyone.
Little by little, Justeaze's cold and aloof eyes began widening.
Little by little, Justeaze began backing up.
"You…" She said, shocked beyond bounds. "… You… Wand…"
Black stopped, smiling at her, the Crystals vanishing from their eyes. "Your wish to achieve Heaven's Feel," he said with Calm, "and your desire for Humanity's Salvation will not come true. You exist as long as the Greater Grail exists in this world.
"Once that is dismantled, you will also cease to exist. All those preparations, sacrifices, and expectations… will cease to exist.
"There will be nothing, my lady. Nothing."
The Greater Grail's Core looked at Black in sheer fascination, what he had shown her still buzzing in her mind.
"I can prevent that from happening," Black claimed. "These people, this world, this timeline… I can save them all."
Slowly, the fascination in Justeaze's red eyes turned into terror.
"The Salvation you speak of, oh outsider," she said, showing no hint of that terror, "will be a Curse for everyone."
Black's eyes narrowed.
"Give me one example where Creation has happened spontaneously without Destruction," he said, taking one more step forward, "and I swear on my name I will return to where I have come from."
Black stood tall, mere centimeters away from her, looking down into her eyes.
He could feel it in his bones. There was such raw, magical energy in his surroundings that it could literally rip him apart. As if that wasn't enough, the Grail Heart within him thumped wildly as Illya's flesh and blood resonated with Justeaze's existence.
Yet, Black ignored all signs.
He hadn't seen Lucky Intuitions being so positive in a long time.
This is it, they were saying. This is his chance to turn things around, solidifying his footing in this timeline.
In front of him, Justeaze lifted her neck to meet his stare.
"How can you bring Salvation," she asked flatly, "when you cannot even protect yourself?"
Justeaze looked down, the top of her head barely reaching his chest.
It was like she could see him through and through. The Grail's Corruption. Angra Mainyu's Will rocking Black's mind, taking over him bit by bit.
"I can win the Holy Grail War before the Evil gets released," Black said, taking a step back, holding his chest. "That isn't a solution, though. It would only be delaying the inevitable. That's why I need your help, my lady. Help me. And, in return, I will do what I have shown you I would. One way or another, there will be peace in this world."
Justeaze remained quiet for a while, the magical glow in her eyes flickering.
"There's a way," she said, without mentioning if she accepted Black's words or not. "It's not any better than letting the Evil Will consume you, but…"
"But?" Black asked, the Ad Infinitum getting ready to project the probability of success.
"But there's a route that remains unexplored, still," Justeaze said. "A route, if you are capable of exploring, that can purify the Grail."
"What is it?" Black asked.
"Transfer the Evil to someone else," Justeaze replied. "To…"
The Greater Grail's Core gave Black a name, making his eyes light up. Her? Doesn't that route always lead to…
"As I said," Justeaze added, "one possibility of this route remains unexplored. Once you decide to walk on this path, you will have to deal with my old friend as well, triggering what your kind calls — Inheritance War.
"Not only will you have to deal with other outsiders, those who chose to come, but… once you transfer Angra Mainyu to her, the Counter Force will summon a Ruler-Class Servant as a safe measure as well."
Black didn't mind dealing with Contestants who would come for the Inheritance of a Magus from one of the three families in this timeline.
However, a Ruler-Class Servant meant an unknown variable.
His Hidden Mission had taken care of such a possibility, but if he transferred the Evil Will to someone else, the mission alone wouldn't be enough for the Counter Force.
"I will only help you if you are prepared to walk on this route," Justeaze said, her red eyes staring into the abyss, seemingly lost. "No matter how impossible it would be to avoid the fate of world annihilation…"
Suddenly, Black smiled, as if he had been longing to hear these words from her mouth.
"Tell me your plan, my lady," he said, grinning, "because… for me… Nothing Is Impossible."
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