Seeing the changes within himself, Izumi couldn't help but feel thrilled.
A four-digit transcendence class… who else could compare?
On top of that, with two four-digit class Star Beasts under his command, it would not be an exaggeration to say that he had already become completely invincible in this world.
Taking a deep breath, Izumi calmed his excitement. Just as he was about to check on Est, Avrora suddenly began to protest loudly.
"My pet!!!"
Hearing that, Izumi's lips twitched. He gave up on opening the system for now and instead pulled Avrora into his arms.
"Open your mouth. Bite down."
Avrora froze.
What was that supposed to mean? Was he bullying her because she looked naïve?
But Izumi didn't care. A vampire's bite might be dangerous for ordinary humans, but he wasn't ordinary. She couldn't even break through his defenses.
"Mmgh—!!"
After a moment, Avrora pulled back, sticking out her tongue in dissatisfaction.
"You're bullying me. It doesn't even taste good."
Although Izumi had returned her the right to summon the Beast Vassal, she had still completely lost ownership of the bull.
First the little lion, and now her bull.
Looking at the foolish yet adorable girl before him, Izumi knocked lightly on her head.
"Alright. Your bull is stronger now. You can still summon it, can't you?"
"So stop worrying. What's mine is yours, and what's yours is mine."
Hearing that, Avrora's face flushed red.
"My things are not yours!"
"You're being shameless!"
She might act silly, but she wasn't stupid. She understood what their previous exchange implied.
The two of them continued talking past each other until, after a while, Avrora finally gave up arguing under Izumi's coaxing.
Seeing her like that, Izumi smiled mischievously.
"Come. Let's continue."
"Allow me to seal upon you an eternal bond."
Before Avrora could react, he pulled her closer.
Soon, Avrora fell asleep in his arms.
Only after that did Izumi finally have time to return to the system.
He summoned Est.
The moment he selected her, a crest appeared on the back of his hand.
It was a Spirit Crest.
He could clearly feel a lifeform sleeping within it.
Raising an eyebrow, Izumi murmured to himself.
"A complete form, huh. Interesting."
With a wave of his right hand, the sacred sword appeared before it had yet to take on its girl form.
Then he began modifying it.
Taking advantage of the fact that Est had not yet awakened, he freely adjusted her structure.
Originally, Est already possessed certain special attributes, but Izumi added even more:
Space severance.
Indestructibility.
Infinite growth.
Demon-slaying.
Curse.
Causality.
Anything that could be added, he added.
What had once only been at Demon King class was now pushed into a transcendent level. And in the future, it would only continue to grow stronger.
By the time he finished, dawn had already arrived.
Nodding in satisfaction, Izumi stored Est away again.
He had no intention of treating her as a mere weapon.
He lacked nothing in weapons. With the Solar Authority, he could create any divine armament he desired with a single thought.
So Est… would be raised as something far more precious.
Glancing at the peacefully sleeping Avrora beside him, Izumi lay down and quickly fell asleep as well.
When he woke again, Avrora was already gone.
After coming downstairs, Le Fay immediately spoke with a teasing tone.
"Izumi-sama, you know… three years minimum, maximum death penalty, right?"
He rolled his eyes.
"No. She's long past legal age."
Avrora was older than anyone present by countless years.
Le Fay chuckled and dropped the subject.
At that moment, Sakura had already finished preparing breakfast. Just as everyone sat down to eat, the doorbell rang.
Before Izumi could stand, the door was blasted open.
Kuroka rushed in, furious.
She leaped onto Izumi and grabbed his neck.
"You bastard!!"
"You actually ruined Shirone!"
"You know how dangerous that is?! This could kill both mother and child!"
She shook him violently.
Her little sister had gone out with this guy once and returned in this state. Who was she supposed to complain to?
Even Rias, Akeno, and the others who followed behind stared at Izumi like he was some kind of pervert.
That small and you still did it?
After enduring the shaking for a while, Izumi smacked Kuroka's hips.
"You stupid cat, let go."
"You broke my door. I should be the one demanding compensation."
Kuroka immediately bit his shoulder.
"I don't care!"
"You ruined my sister. I'll bite you to death if I have to!"
"What are you going to do about it?!"
"Cat-siths are especially unstable at times like this!"
She was genuinely worried.
If something happened to Shirone, it would be a disaster.
Koneko looked helpless.
"Big sister…"
"Shirone, be quiet!"
"Today, he has to give me an explanation!"
Very domineering.
Izumi sighed internally.
"Enough. Stop talking nonsense."
"It's not that easy to conceive my child."
"I'm already on the same level as Ophis. I might even surpass her."
"Do you really think it's possible?"
The stronger the individual, the harder it was to produce offspring.
So Kuroka's worry was completely unnecessary.
However, when Rias and the others heard that, they were stunned.
The same level as Ophis?
Had Izumi really become that strong?
Ophis was one of the strongest beings in the world.
And yet he claimed to stand on equal footing with her.
Was he serious? Or was this just a joke?