Yuki had roamed through the unknown city with no direction of where to go. He couldn't find a library when he walked through different parts of the city. He sighed in disappointment and had stopped for a break.
Yuki: This is stressful... true immortality my ass...
He murmurs while sitting. He thought to himself about his plans, although he was doubting what Yuichiro said. There were ideas he brought up, but other ideas he didn't bring up which made him suspicious.
He stared off into the distance with his cold, detached and exhausted expression.
Yuki: I doubt he's correct, although... one thing that confuses me is.. who's Miya?
His thoughts built up suspicion as he asked himself questions. He stood up again then walked around again. He yawned while roaming around.
Yuichiro, however, was watching everything from a distance in space. He sighed deeply while petting his hellhound pet, Umbryx. He thought to himself, then sensed a high energy around him.
Yuichiro: The hell?
Umbryx sniffed the cold air of space, and started going close to Yuichiro. It had sensed an immense power that could be destructive.
Yuichiro noticed Umbryx quick retreat as he examined the space surrounding them. Stars glistening and shining brightly.
Then someone had appeared in front of him. A black dark robe around the person with the hood. It was the Grim Reaper who had came from Hell and came from following Yuki.
Grim Reaper: Hello, Yuichiro Suzumiya.
Yuichiro: What do you want?
He wasn't scared of the Grim Reaper, although Umbryx was terrified of his presence.
Grim Reaper: I'll be taking Yuki Fujita. You won't stop me from doing so.
He was unsure if he should intervene or not, although he knew he could win against him in a fight. Yuki kept roaming on Earth with a cold, detached, and exhausted expression with his new katana.
He wore his katana on his back, while Yuichiro speaks to the Grim Reaper.
Yuichiro: I'd like to see you try. Though, he won't be letting you. So you might have to fight him for it.
The Grim Reaper's skull was glistening in the dark space as he gripped his scythe tightly. He then disappeared, then suddenly reappeared next to Yuki.
Yuki had immediately sensed the Grim Reaper's returned presence right next to him, then he went to gently grab his shoulder. That didn't go well for the Grim reaper.
He had pulled out his katana stopping the Grim Reaper from touching him.
Grim Reaper: Oh...?
He held his scythe close to him, sensing Yuki's descend into a state of emotionless abyss.
Yuki: Don't touch me... I had realized after Seraphyne told me about you...
Grim Reaper: Good for you then.
He swung his scythe at Yuki, then he put his katana, the Divine Extermination, in front of him, blocking the attack, but the impact sent him flying outside of Earth.
Yuki's eyes widened a bit as he crash-landed on the moon, but blood had gushed out from his torso the moment of landing. It was a deep cut from the Grim Reaper's forward slash.
Yuki: ...When did he?
There was a pause in his thoughts as the Grim Reaper appeared in front of floating in that space.
Grim Reaper: You've been wanting to die for so long after your families death at age eleven... so why don't you come with me...?
He kept bleeding out, until his wound completely closed up instantly. He noticed this and was a bit surprised.
Yuki: Regeneration....? So.. is what Yuichiro saying about being cursed with true immortality true? If so, that explains the regenerative ability..
Grim Reaper: Thinking huh...? Fine.
He suddenly appeared in an inch in front of his face, his skull up close to him then swung his scythe. Yuki had dodged the attack then the Grim Reaper swung his scythe again.
It had split the moon entirely in half as Yuki landed on a half.
Yuki: ...You're strong. What are you...?
The grim reaper glanced at him in the eyes and chuckled slightly.
Grim Reaper: I'm the Hell Spirit. I'm Death itself..
Yuki: Death itself huh? Fine... but I'd rather die normally... or at least die by anyone who isn't you, Death.
His cold and detached tone echoed through space as the Grim Reaper gripped his scythe tighter then charged towards him. Yuki noticed this, and didn't have the speed to even react, and as he swung, he blocked it.
The attack was blocked, sending shockwaves across space. The impact caused Yuki to shake a bit then he stepped back.
As he landed, he immediately charged after Death, then swung his katana horizontally, but he had avoided it.
Within that single swing of the Divine Extermination katana, the shockwave had destroyed millions of stars. They had vanished out of existence. That's how powerful the Divine Extermination katana is.
Death noticed this and glanced at him in th eyes again with some shock.
Grim Reaper: Damn... if I got caught by that slash, it would've killed me. This kid... his eyes are soulless and lifeless. I can see he's been through it because of me. It was their time to die anyways.
Death's thoughts were a bit hesitant as Yuki charged forward him. Death had avoided the attack, but he wasn't in front of him.
Grim Reaper: He disappeared...?
Yuki: Behind you...
Large magical circles appears behind Yuki as they were already prepared.
Yuki: Hollow Extinction of Life...
The large beam of light had engulfed not just Death, but almost the entire solar system except for Earth, which caused them to be erased completely from existence on every level.
Grim Reaper: You... that energy.. Abyssal Energy? How come have I not noticed...
He had his last thoughts before dying. It was too fast of a beam, but Death could've dodged it. Although, he didn't. He was caught off guard.
Wind blew through Yuki's hair as he stood on the moon. He sheathed his katana and sighed deeply and sat down on the rocky ground of the moon.
Yuki: ...Seems like I've overdone it. The many planets are now erased because of me... I'll find some way to fix all of this destruction.
He sat there, but the thought of returning back to Earth wasn't thought about.
Yuki: How will I get home...?
He murmured as he stood up and seeing he had no way of heading home. His body had adapted to space, now being able to breathe in space with no problem.
He sighed deeply as he stayed on the moon with nothing.
Yuki: ...What type of energy was that anyways?
Yuichiro appeared next to Yuki with a smile as he played with Umbryx and petting it. He glanced at Yuichiro in the eyes.
Yuichiro: That right there was Abyssal Energy. I knew you'd figure it out at some point.
His smile was gentle as Yuki was unsure what it was. Yuichiro then snapped his fingers rebuilding the entire solar system plus the destroyed stars.
Yuki: Abyssal Energy....?
He hesitated as Umbryx walked over to Yuki and laid down on his lap.
Yuichiro: Yeah. Abyssal Energy is the type of energy that practically holds infinite power, and it's extremely destructive. Of course, holding this type of energy within you would cause your body to explode even with 0.1% of it.
Yuki: ...
He stayed silent.
Yuichiro: Not even gods could wield it. My pet was right, it seems nearly omnipotent. Although, this energy will destroy everything, even if it has to deny the impossibility. It's not erasing anything that shouldn't exist, but it makes everything that's impossible, possible.
He continued explaining to Yuki as he sat there with Umbryx laying on his lap and licking his hand.
Yuki: This is too much information... I'm not even sure what's going on...
Yuichiro kept explaining. It was somethin that confirmed his theory before he met Yuki. He chuckled slightly then sensed the amount of Abyssal Energy within Yuki, causing his eyes to widen a bit.
Yuichiro: Holy... his mana is built off of the Abyssal Energy...? This amount of reserve could kill anybody and everything! His reserve.. it's truly boundless!
Yuichiro was in shock as Yuki sat there with Umbryx sitting on his lap. He licked his face, then Yuki glanced at him.
Yuki: What...?
His cold and detached tone had echoed a bit as he glanced at him in the eyes.
Yuichiro: Your mana isn't just mana. It's the amount of abyssal energy you have, and currently.. it's boundless.
Yuki's eyes widened in shock a bit as he sat there.
Yuki: I see...
His detached expression came back while Yuichiro sighed deeply and gestured Umbryx to come back to him.
Yuichiro: You know... use it wisely. It's as absolute as your immortality. So be careful got it?
Yuki nodded as Umbryx and Yuichiro had vanished from his sight of vision. Yuki had remembered he had forgotten to ask him something. He sighed in disbelief.
He had no idea how to get home, so he just sat there on the moon, silently. It had seemed that Yuichiro changed his mind about it being nearly omnipotent. It was truly omnipotent of an energy.