Even with Est's rather unusual way of thinking, she couldn't help becoming embarrassed when Izumi teased her like that.
"I'd rather use you."
Those words were far too easy to misunderstand.
Her cheeks immediately flushed red.
Still, she accepted the sword from Izumi's hand.
After studying it for a moment, she hesitantly voiced her concern.
"Izumi-sama..."
"Can I really absorb a weapon like this?"
"With my current strength, I don't think it's possible..."
A troubled expression appeared on her face.
She could clearly feel it.
This sword was stronger than she was.
Far stronger.
If she attempted to devour it by herself, she would likely fail.
After hearing her worries, Izumi rolled his eyes.
"Of course I'll help you."
"You don't need to worry about that."
Relief immediately appeared on Est's face.
"If that's the case, then there won't be any problems."
"Izumi-sama..."
"I'm ready."
"Please use me."
The moment she finished speaking, her body erupted into dazzling light.
The next instant, her figure disappeared.
In her place remained a beautiful silver-white sword, gently falling into Izumi's hand.
Seeing this, Izumi couldn't help smiling.
Then he got to work.
Holding the mysterious nameless sword in one hand and Est's sword form in the other, he found a comfortable place to sit.
His gaze moved between the two weapons.
A faint smile appeared on his face.
Power surged from his body.
Without hesitation, he began dismantling the nameless sword.
The sword's essence was stripped apart layer by layer.
Its tremendous power flowed like a river and was gradually transferred into Est.
The moment the process began, Est's sword body started trembling violently.
The power contained within the nameless blade was simply too overwhelming.
It was far beyond anything she had ever absorbed before.
Even Est, who had grown alongside Izumi and received countless benefits from his evolution, found it difficult to endure.
After all, Izumi had already stepped into the realm of the Single-Digits.
Through her connection with him, Est herself had long surpassed ordinary standards.
Among powerful beings, she could already be considered an exceptional existence on the Three-Digit level.
And yet—
Even someone like her struggled to withstand the sword's power.
That alone demonstrated just how terrifying this weapon truly was.
Seeing her trembling, Izumi gently smiled.
He reached out and softly stroked the blade.
A warm and gentle power flowed into it.
Immediately, Est's trembling began to subside.
Her voice echoed from within the sword.
"Izumi-sama..."
"Please continue."
"Don't stop."
"I can handle it."
Hearing her determination, Izumi nodded.
"Good."
Then he increased the flow of power.
The essence of the nameless sword continued pouring into Est.
Wave after wave.
Endlessly.
Est absorbed every bit of power transferred by Izumi and merged it into her own existence.
As the process continued, her aura grew stronger and stronger.
Sharper.
More absolute.
If anyone had been present to witness the scene, they would have been horrified.
The sword intent radiating from Est alone was enough to kill weaker beings with a single glance.
Her existence was transforming.
Evolving.
Ascending.
...
At the same time, throughout Izumi's world, every swordsman suddenly felt something.
Whether they were masters, saints, or divine beings, all of them instinctively raised their heads toward the summit of the Sephiroth Tree.
A terrifying presence had appeared there.
A sword.
A sword so powerful that it surpassed all common understanding.
The weapons in their hands began trembling.
Some shook in fear.
Some bowed in submission.
Some seemed to be worshipping a supreme monarch.
The phenomenon left countless people stunned.
"What is happening up there?"
"Has some terrifying existence been born?"
The same scene was occurring across countless worlds and dimensions connected to Izumi's domain.
Everyone capable of sensing higher powers felt it.
A supreme sword was coming into existence.
...
Elsewhere.
On her day off, Rias was relaxing at home when she suddenly sensed the overwhelming aura.
Her eyes narrowed.
"Oh?"
"Interesting."
"What an incredible presence."
A moment later, surprise appeared on her face.
"Wait..."
"A weapon from another dimension?"
She carefully examined the aura.
Then her expression changed.
"Huh?"
"This thing could actually hurt me?"
Rias couldn't hide her shock.
The weapon's power was absurd.
Even someone at her level could potentially be threatened by it.
But what shocked her even more was something else.
She followed the source of the aura.
Then she discovered what Izumi was doing.
And immediately froze.
"...He's serious?"
"He's melting down a weapon like that?"
"And using it to strengthen Est?"
Rias stared blankly into space.
The corner of her mouth twitched.
That sword was powerful enough to become a legendary treasure in any world.
Yet Izumi had casually taken it apart and used it as enhancement material.
What kind of extravagance was this?
No—
Calling it extravagance wasn't enough.
It was pure insanity.
Only Izumi would ever do something so absurd.