His left eye's ability was named [Fantasy Replication], which function is to replicate abilities he has seen and store them. The storage limit is five.
His right eye's ability is used in conjunction with the left eye.
[Fantasy Manifestation: Can use the stored abilities. It can also perform proportional conversion of abilities that are either too costly or too low-cost to suit the user's own capacity, and the power will be appropriately decreased or increased.]
In Yusei's view, this ability was very powerful. If he entered the Marvel World, he could even replicate Thanos's Snap.
However, the replicated ability wouldn't be as powerful as the original, capable of wiping out half the universe's life.
His right eye would perform proportional conversion based on his own energy, determining how much life he could erase with the ability.
But even so, it was still extremely strong.
The most terrifying part wasn't replicating powerful attacks.
It was that [Fantasy Replication] could replicate almost anything, as long as it fell within the category of 'ability'. Even the abilities of weapons could be replicated.
For example, the ability unleashed by the Noble Phantasm [Excalibur]. Or abilities that make certain immortal monsters unkillable.
The practicality of this ability was frighteningly powerful. The only thing to watch out for was whether his own energy was sufficient.
But that wasn't an insurmountable problem, because regardless of whether his energy was sufficient or not, he could still use the replicated ability.
The only difference lay in the power of the original version being adjusted according to his own energy value.
Here, 'energy' didn't just refer to magic power, spiritual power, demonic energy, etc., but also broadly included mental power, life force, ki, even sword energy… all counted as forms of energy.
However, after the brief joy, Yusei suddenly remembered that his world had no supernatural powers.
The only thing present was swordsmanship, which made him feel a slight sense of loss.
But he quickly came to his senses.
Actually, the time spent in SAO could be considered quite thrilling. Furthermore, a daily world without supernatural powers was the safest.
There might be nothing for him to replicate, but similarly, there was nothing that could threaten him and his family.
Moreover, even if he couldn't replicate supernatural powers, the Susanoo of his Eternal Mangekyo wasn't just for show.
As an enhanced version of the Eternal Mangekyo, he could fully manifest the Complete Body Susanoo.
However, he didn't have Chakra, so the consumption relied entirely on his mental energy. With his current mental energy, if he activated the Complete Body Susanoo, he would likely die from mental energy depletion.
Actually, even if he wanted to use Susanoo, Yusei felt that in this everyday world, the ordinary skeletal armor stage of Susanoo would be enough to handle most situations, so he wasn't too worried.
"It's been so long, I should go back. I wonder if Shiro will cry seeing her brother hasn't woken up. And how are Asuna and Yui doing now?"
A gentle expression appeared on Yusei's face. He was soon going to truly meet his girlfriend.
Shinomiya Family's Private Hospital.
In the luxurious hospital room, Yusei's parents, the Shinomiya elders, and Shinomiya Koken had all arrived.
Koken looked at his granddaughter, who seemed to be in fairly good condition, and breathed a sigh of relief. But then his worried gaze turned towards Yusei, who still hadn't woken up.
Unconsciously, he looked at Kaguya and asked, "You said it was Kazami Yusei who defeated Kayaba Akihiko in the end?"
Kaguya hummed in affirmation... her voice was already better, at least not as hoarse, "He developed a new sword technique based on Hiten Mitsurugi-ryu and used it in the game to defeat Kayaba Akihiko."
Koken nodded, a flash of appreciation in his eyes. But then, worry surfaced again.
Actually, his concern over Yusei not waking up was no less than his worry had been when Kaguya was unconscious.
Kaguya's parents, seeing their father's worried expression, understood his thoughts well.
So, the looks they gave Yusei also held a good deal of the kindness an elder shows a junior.
Yusei's parents were happy that their daughter had woken up... but also felt a sense of loss because Yusei hadn't.
Koken, being the oldest, hadn't panicked. He calmly reassured everyone,
"Let's wait a little longer. Yusei is my disciple. He protected everyone. He protected Kaguya. I believe he will definitely wake up."
Everyone could only nod silently. Kaguya, lying in the hospital bed, looked at Yusei with deep concern in her eyes.
Suddenly, as if Koken's words had really taken effect, Kaguya, who had been watching Yusei, noticed his finger twitch slightly.
Then, Yusei's eyelashes fluttered slightly. Under Kaguya's surprised gaze, he slowly opened his eyes.
The nurse monitoring Yusei's condition also noticed this and immediately cried out joyfully,
"He's awake!"
This voice immediately made everyone's hearts tighten. The Kazami Couple quickly looked at their son and saw he had opened his eyes.
"Yusei is awake! He's alright!" Kanako threw herself into her husband's arms and cried bitterly, making Akira, as the husband, quickly comfort her.
In front of so many people, he felt a bit embarrassed.
No one paid much attention to that. Koken looked at Yusei's spirited brown eyes and couldn't help but let out a hearty laugh.
"Haha! My disciple is blessed by fortune. I knew nothing would happen to him."
Yusei looked at the crowd surrounding him. He suddenly felt a gaze from the side. Turning his head, he saw it was Kaguya's.
Seeing Kaguya was doing well, he breathed a slight sigh of relief, then turned to Koken, who was laughing heartily.
"Shisou… Could you investigate someone's identity for me? She is a friend Kaguya and I met in the game. I want to confirm her current condition. Her name is Yuuki Asuna."
Koken was taken aback. It was the first time he had heard Yusei call him 'Shisou'… it was truly rare.
But hearing the person was a friend of both his granddaughter and his disciple, he didn't hesitate and immediately nodded.
"Alright, I'll send someone to investigate immediately."
Yusei relaxed, 'I had already dealt with Sugo Nobuyuki quickly. But who knows if the world has some kind of inertia? If Asuna hasn't woken up, that would be disastrous.'
However, all of his actions, seen through Kaguya's eyes beside him, felt so heartbreaking.
For some reason, seeing Yusei's first action upon waking being to ask about Asuna's condition made Kaguya feel an intense heartache and grievance.
A thick sense of loss wrapped around her heart, lingering and hard to dispel...