— — — — — — —
With the issue of man-eating demons finally settled, Renzo could now focus on what came next. Aside from traveling with Shinobu, Kanae, and Makomo as he had planned, he had two major tasks ahead of him.
First, he needed to experiment with and refine the formula and notes he had obtained from Muzan.
The goal was to develop a true "Immortal Elixir"—one that preserved the advantages of Muzan's transformation, such as longevity, incredible vitality, accelerated healing, and enhanced physical attributes, without any of the weaknesses of demons.
Ideally, it would even allow users to awaken unique abilities.
Second, he wanted to further study and evolve the Breath techniques. His ultimate aim was to create a breathing method that rivaled or even surpassed the Sun Breathing technique.
After all, he had to find something to occupy his time.
---
That night, Renzo gathered with Shinobu, Kanae, and Makomo.
"So, have you guys decided what you're going to do next?" Renzo asked.
Kanae and Shinobu nodded in unison. "We still plan to travel and practice medicine for a while. What about you, Renzo?"
"Of course, I'll be coming with you!" Renzo grinned. "What if someone bullies you or tries to snatch you away from me? Gotta make sure that doesn't happen, right?"
"You really…" Kanae shook her head, amused. "Can you have a little more faith in us? And maybe a little more faith in yourself? I doubt there's anyone out there more powerful or more handsome than you."
Then, she turned to Makomo. "Makomo, why don't you come with us?"
"Can I?" Makomo hesitated, looking a little shy.
"Of course you can! You're more than welcome," Kanae said warmly.
Shinobu chimed in, shooting a playful glare at Renzo. "You know how possessive this guy is. There's no way he'd let any of us go off on our own."
"So domineering," Makomo pouted.
"Exactly!" Shinobu nodded in agreement.
The girls exchanged glances and suddenly burst into laughter.
"But isn't this nice?" Kanae smiled gently, wrapping an arm around Shinobu. "Renzo is talented, rich, and good-looking. Plus, I don't want to be separated from Shinobu either."
In this era, polygamy was not uncommon. Even within the Demon Slayer Corps, Sound Hashira Uzui Tengen had three wives, after all.
"I heard you've partnered with the Ubuyashiki family to start a communications company. Is that true? Won't you be busy with that?" Kanae asked curiously.
"Yeah, it's true," Renzo nodded. "But honestly, I won't have much to do. The Ubuyashiki family is handling most of the operations, and even the technical side can be managed by my AI, Red Queen."
"So, I'll just be traveling with you all. With the aircraft, getting around will be a breeze."
Kanae chuckled. "Are you seriously making the Ubuyashiki family work for you? Only you would think of something like that. As for traveling, let's not rely too much on the aircraft. We still need to train."
"Fine, fine, whatever you say," Renzo said with a helpless smile. "But first, we should visit Mount Fujikasane to see our master. You guys okay with that?"
Makomo had no objections, but Kanae and Shinobu blushed slightly.
Was this… meeting the parents?
Still, they nodded and agreed.
— — —
Inside the Consciousness Space…
When Demon Slayer Renzo arrived, Apocalypse Renzo's eyes immediately lit up. "You're here! So? Did you take care of the Demon King Muzan? Did you get the formula?"
"Heh." Demon Slayer Renzo crossed his arms and smirked. "Obviously! Who do you think you're talking to?"
"No time for nonsense! Share it with us!"
Apocalypse Renzo eagerly reached out and high-fived Demon Slayer Renzo, initiating the data transfer. Then, he sat back and closed his eyes to carefully examine the information.
He had been waiting for this.
The other Renzos also completed the transfer, absorbing the knowledge.
Aizen carefully examined the formula before shaking his head. "This is quite something."
"Looks like I really need to speed up the process of creating a physical body."
Recently, he had resolved the design and production issues surrounding a mental energy storage device. Now, he was in the process of accumulating energy, preparing to create a body that perfectly suited him.
"This is valuable, but it needs thorough research."
Gundam Renzo opened his eyes, then turned to Demon Slayer Renzo. "By the way, you need to find the Blue Spider Lily as soon as possible. Once you do, analyze its components and medicinal properties."
"Or you could just eat one directly. That way, we could replicate an unlimited number of them."
Just like how the Blood Orchid was unique to the Anaconda world, the Blue Spider Lily was exclusive to the Demon Slayer world. Without it, the formula might end up with the same flaws as Kibutsuji Muzan's failed immortality attempt.
"Yeah, yeah!" Demon Slayer Renzo nodded repeatedly. "Even if you didn't say anything, I was already on it. I've instructed Red Queen to conduct a grid search using satellites and micro-drone scouts all over Japan. I should have results soon!"
Suddenly, the sound of footsteps echoed from a nearby corridor. Everyone turned their heads toward the source.
Demon Slayer Renzo muttered, "A new member?"
"Oh? That might be it! It's been a while since we got a new member. Wonder what kind of guy it'll be this time?"
Everyone perked up. They loved getting new recruits.
Soon, a well-built man in modern clothing emerged from the corridor. Seeing the gathered crowd staring at him, he froze on the spot.
The others scrutinized him in return.
"Looks like he's from a modern world."
"An ordinary person?"
"No, his physical abilities are far above average."
"Speaking of which, how come we can gauge each other's physical stats in this consciousness space? Has anyone figured out the mechanics behind it yet?"
"Obviously not."
"Well, at least we know he's not from some ordinary slice-of-life world."
Everyone's gazes seemed to strip the newcomer bare, analyzing him thoroughly.
The new arrival, visibly uncomfortable, stretched out his words, "Uh... Can someone please explain where I am? Wasn't I just fighting Gastrea? And, uh... can someone send me back?"
He was utterly confused. Still, he wasn't too worried—after all, he had Enju by his side.
"Welcome, newcomer!"
Demon Slayer Renzo stepped forward with a smile and extended his hand. "If you want to understand what's going on, just shake my hand."
"Gastrea? That sounds familiar..." Hero Renzo stroked his chin, lost in thought.
"The world of Lolis!" Pirate Renzo's eyes lit up.
"You mean Black Bullet, right?" Uchiha Renzo sighed.
"Oh, I see... Now that's... quite the unexpected twist."
The newcomer completed the memory-sharing process with Demon Slayer Renzo. As he absorbed the information, his face filled with astonishment.
"Enough talking! Give me your hand too!"
The rest of the Renzos didn't wait. They all stretched out their hands, eager to share memories.
"Yep, this world is as frustrating as ever."
After fully digesting the new guy's memories, everyone now remembered the world he came from.
"Those disgusting, corrupt humans really deserve to die. Newbie, you've been in that world for years, and you still haven't wiped them out? What a disappointment!"
Pirate Renzo muttered under his breath, clearly unimpressed.
"Shame on you!"
"If it were me, I'd make sure no human survives in this world."
.
.
.