A Strange Hidden Cave

From floors 2 to 10 were various facilities that are useful for everyday life, including recreation and large kitchens. But due to time constraints, most of the furniture was absent and Kisuke planned to fill them up whenever he was finally able to open his own inventory.

Of course, everything was in a sci-fi theme, however, that didn't mean that it felt claustrophobic and airtight since the walls of rooms like the dining room and grand hall were covered in very high-resolution panels that displayed the outside view, making them look like windows despite not being one. In addition to that, the colors that he used weren't just singular, adding to the vibrancy and elegance of the whole interior.

From floors 11 to 50 were rooms for general admissions, with each floor containing 10-15 rooms. The rooms varied from quads, doubles, and singles. Each of the rooms had basic facilities like a toilet and a shower. Of course, since Kisuke was following a sci-fi theme, the halls are what you'd expect to see from a spaceship and the doors were sealed, complete with a fingerprint scanner, key-card scanner, keypad input, and a terminal for an intercom.

The floors from 51 to 60 were the high-class suites that were suited for the big spenders, with each floor containing 5-3 rooms. The rooms are what you'd expect from a high-class suite, as it was completely furnished in addition to having a magnificent view of the outside. Each room would cost around 150,000 - 200,000 Valis each night, which was already as expensive as a high-class Elixir.

As for the floors above and the rooftop, they were, of course, for Kisuke and his family's private use and could only be accessed through a teleportation circle in a very tightly secured and secret room in the lobby.

Within the 69th floor, a Japanese-themed floor, Kisuke, Yoruichi, and Kuroka were having tea on the tatami floor, "You overdid it..." mumbled Yoruichi.

"How are you going to manage such a large place, nyaa?" asked Kuroka.

"Don't worry. Everything in here is automated. Magic is a very convenient tool, you know? If you can set it up, you can do almost anything from automatic repair and cleaning, to room allocation and logistics. I set everything up so that even if we left this place alone for a long period of time, it'd still function as intended. The only real limit is the power source, as that needs to be replenished regularly."

"Even then, we could just commission someone to replenish it. For the time being, I've used the Magic Stone of the Kuraokami as the power source and it should last for about six months at full capacity use. It'll probably be longer than that since I don't think this place will be running at full capacity anytime soon."

Kisuke had the option of using his own technology to gather Magic Power from the atmosphere, however, they're inside of the Dungeon and he doesn't know how it'd react to its Magic Power suddenly being drained, so he didn't want to risk it.

Yoruichi then pointed towards the 'window' and asked, "What about that dome? And is it really wise to use glass panels on it?"

"It's a simple training facility and that isn't glass, but transparent metal."

Yoruichi and Kuroka's interest peaked, "Transparent metal?"

"It's an alloy from Orichalcum and some other rare metals that I was able to create some time ago. Although it's weaker than Orichalcum itself, it's still stronger than most metals out there."

"But even then, strong monsters still roam this place. Orichalcum and Adamantium are strong, yes. But they aren't indestructible, nyaa."

But Kisuke just chuckled and replied, "No worries~ It also has automatic hazard detection that would automatically deploy Magic Barrier on its surface. Not just that, it also has several retractable Magic Cannons that are capable of obliterating several Level 5 monsters in an instant~ Though that might deplete the power source in an instant."

"What the heck!? Put thrusters on this thing and it'll be technically a spaceship! No, a warship, nyaa!" Kuroka retorted again.

"If we weren't underground, I would have added that too."

"You would!?"

"But let's forget about that for now and discuss our next course of action. I've already wasted 3 days on this so I don't want to waste anymore of our time."

However, Yoruichi suddenly stood up and started dragging Kisuke towards the bedroom, "No. You're going to rest. I know you didn't just work on this project, but also trying to learn your new energy while at it. The mental strain on that should be immense, so you're going to rest."

From Yoruichi's tone, she wasn't really requesting it but making it more of a command. Kisuke could only smile wryly as he let himself get dragged away. Seeing this, Kuroka hurriedly followed while saying, "I'll take the left side, nyaa!"

And indeed, Yoruichi was correct. As long as Kisuke still hasn't managed to adapt his control to his subconscious, every single movement he makes, even as tiny as lifting a finger, was carefully calculated. Even though Kisuke had a great amount of mental fortitude and could probably take some more beatings, Yoruichi knew he still had his limits and she wouldn't wait for that limit to be reached.

Knowing Kisuke, Yoruichi knew that he wouldn't stop until he's either barely capable or he's finished his job, so she had to personally take action to stop him.

.

.

.

On the fifth day since they'd arrived at their destination, Kisuke, Yoruichi, and Kuroka returned to the 47th floor and immediately went straight towards the lakeside of the lava lake.

While looking at the bubbling hot matter, Yoruichi asked, "Can your body take the heat of the lava? If not, both Kuroka and I are gonna help you."

Yoruichi asked since she knew that Kisuke couldn't cover himself with any protective energy.

Kisuke, on the other hand, didn't immediately answer but instead crouched down and dipped his hand in the lava without hesitation.

For a whole minute, Yoruichi and Kuroka only quietly watched Kisuke's hand sizzle in the hot bath before he lifted his hand, showing that it was red, but not burnt, "Looks like I can take it. So the secret room's under this?"

"Yep," Yoruichi answered as she and Kuroka covered themselves with Reiatsu-Ki and Ki respectively.

Kisuke then started undressing as there would be nothing left since he can't protect them, "I'll need you to lead me by hand, though. Since I can't really sense much."

Kuroka kept Kisuke's clothes while saying, "You should really make some burn-resistant clothes later."

Yoruichi grabbed Kisuke's hand and dragged him to the lava, diving in. Kuroka also soon followed and the 47th floor returned to its former stillness.

After five minutes of swimming, the group entered a small crevice. A few more minutes later, all of them got out of the lava and into a small cave with a small pond in the middle.

Kisuke looked back and saw that the lava was being kept out by an invisible barrier, the same as the seawater being kept out of the Dungeon. Furthermore, the temperature inside the cave was actually a bit cold. One could only describe this spot as a different world from the outside.