"5-50,000!?"

"Yeah, but that's nowhere near enough. If possible, I'd like to have at least 100 million of these so that I could add other functions," Kisuke added, " Though I already have automated manufacturing in place, so I just need a few months to achieve this."

Serafall's mouth twitched and she felt her head starting to ache, "1-100 million? Isn't that too much? Where are going to get the materials to make all of that anyway? Do you have that much funds?"

Kisuke grinned before answering, "Outside of Earth, it's free real estate~! There are tons of asteroids out there. As for energy, it's dumb to solely rely on magical energy. Our great sun is there for that. On a side note, my work on converting natural energies into magical energy is also progressing well. So if I want to use mysticism in these pieces of equipment, I would be able to do so in the future."

Serafall couldn't say anything else and thought, 'I thought he was the same as Ajuka-chan and Azazel-chan... But it seems that he isn't just an expert at inventing magic equipment, but also capable of using just pure science. He's really got all his bases covered.'

"Well, enough of that for now... What's the plan? How do we start building your hideout?" Serafall changed the subject. She'd had enough for today.

Kisuke took note of the time before replying, "Hmm... Looks like it's done."

"...What is?"

Instead of replying, Kisuke went towards the totem and touched it. A second later, the totem floated up and the ground suddenly disappeared, revealing a four-meter wide hole, making the three of them fall below.

Of course, Ophis and Serafall didn't panic and the latter asked with a calm tone, "What's this?"

"Before we even came here, most of the work was already being done," Kisuke replied before grabbing Ophis' hand and accelerating downwards, "For now, let's go down."

The three of them went downwards for a minute or two, however, Serafall noticed that despite them having traveled for quite a distance, she didn't feel any fluctuations in the temperature, 'So he's already got everything prepared.'

A few seconds later and the three of them arrived in a very wide and very well lit place. Similar to his first hideout, the surrounding was that of a wasteland, however, it was much wider as this place was at least 8,000 cubic kilometers, almost 300 times larger.

"...W-what are you going to do with all this space? And where did you put all the soil that you churned out? Finally, you're also done stabilizing this place including the gravity? If I didn't know any better, I would think that we're still on Earth."

Kisuke first looked around and nodded in satisfaction, "Sometimes, I do some hazardous experiments, so I need some wide space so that even if a big explosion were to occur, it won't touch the other areas easily. As for everything within this space before, I compressed it and used that for the wall. It should be a good framework for further defensive barriers."

Serafall then gave him a dirty look, "The fact that you make big explosions sound like something normal in your experiments is already weird."

Ignoring her comment, Kisuke clapped his hands and said, "Alright~! Let's start building things! Sera-chan, I'll give you a space, so build anything you want. That's the same for you, Ophis-chan." He then started taking out a bunch of materials from his inventory, enough for everyone to play around.

Since Kisuke was looking forward to seeing Ophis' creations, he taught her a few ways to use the materials to build things. He knew that Ophis has already seen a lot of things so he's not worried that she wouldn't have any ideas on what to make.

After getting the idea, Ophis nodded enthusiastically and directly took over the center of Kisuke's new hideout.

Kisuke could only smile wryly at her actions, but didn't say anything else and went towards the northern side to build the necessary facilities to prepare for his departure.

Since Kisuke was kind enough to give her a space, Serafall also didn't say anything else and went south.

However, Kisuke could only complete the bare minimum of his facilities and Serafall was still planning what she wanted to build when they decided to assist Ophis in her sudden grand project, which was a castle that is bigger than the Devil Kings'.

When they asked why she wanted to build such a thing, she only answered proudly, "...Because I'm strong."

They ended up spending a whole day working on Ophis' castle and only its bare minimum without any sort of furniture inside. If they didn't supervise her, the Infinite Dragon wouldn't stop building towering castles.

Since it's already late, Serafall decided to go back, "When are you going to go?"

"As soon as my preparations are done, I'll be going. I can't leave them in that strange world for long," answered Kisuke.

"What about those who are here? Aren't you going to leave them too?"

Kisuke shook his head, "At least in this world, they have comrades and families that they can depend on. It's not the same over there, as we're technically alone in a world with vague rules."

Serafall looked down and muttered, "I see... Are you going to take Ophis-chan with you?"

"She's attached to me and I can't just leave her behind. Not after I promised that I'll be taking her in."

"That's true..." Serafall then smiled at Kisuke, "Well then~! I also have to prepare for some things so I'll be going first."

"Take care, Sera-chan." Kisuke then activated the magic circle to return her to Earth.

"You too. See you soon~!" A strange glint flashed through her eyes before she disappeared in motes of light.

'Hmm? What was that?' A strange feeling took over Kisuke when he saw Serafall's eyes before she left, 'What's she planning now?' Kisuke returned to his work with that question in mind.

He only returned a few hours later to have dinner with his mother and catch up on the things he missed during his time of absence. It was only at that time that Kisuke finally understood 'Mr. Hat'. He didn't expect that the hat that he'd left behind that day would become a mascot in a popular kids' show, 'No wonder those kids reacted that way when Ophis put on my hat...'

It was also there that Kisuke saw the castle of the antagonist which Ophis had modeled her castle upon. Kisuke thought that Ophis liked the magical girl Levia-tan, but he didn't expect that she'd get inspiration from her enemy, 'As expected of the former leader of a terrorist group, I guess?'

Two more days had passed and most of Kisuke's work was almost done, the rest could be left to the automated system that he'd made. Since he was finally free, he decided to visit his childhood friend, Issei, to check on his progress. The first time Kisuke had seen him again, he knew that Issei had taken a strange path and wanted to know what caused it.

However, when he arrived at Kuoh Academy, it was being besieged by Magicians, "...Is this their normal lives now? Looks pretty hectic."

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Editors:

28th00: Phis-chama is Queen of the Castle! She kidnaps princesses to her castle for sleepovers and snacks! Sera is planning to sneak along with them for her Vacation (It truly was a massive mistake to give her more freetime)! Kisuke is learning the horror of being a Shounen protagonist when you don't have a massive overarching plot (Bleach) to explain the 'why' of the random BS attacks from everywhere.

Goyya: The Demon Lord Ophis will open her business soon. What business you say? Saving lolis for the greater good.