Looking at the flying fortress which seemed as if it wanted to cover the entire world, Nan Tian was speechless since it was much bigger than what he had expected. Even the mountain paled in comparison when placed next to the fortress.

With one main platform and 5 branch platforms around it, the city was armed to the teeth with weapons, barriers, formations and counter spells. The 'crystals' that could be seen around the city were actually highly compact runes which made them seem like it was a single solid colour.

On the main platform, there was a giant tower which was adorned with golden crests which pulsed with divine energy. Thanks to the nature of her anchor, divine energy was constantly being circulated through the entire city and these crests amplified the effects.

One of the new additions that Shiro had created within this fortress was a self sustaining mana domain which allowed it to float on its own even if the world was suddenly drained of mana. With the divine energy helping the nanobots, she could make this entire city float and functional with a single drop of mana never mind the huge reserves that were constantly being stored within this fortress.

Aside from the main tower, the centre platform was also filled with large empty spaces where buildings could be built. While it may look empty now, Shiro could construct thousands of hidden weapons with a snap of her finger since this was entirely made from nanobots. She had control over the entire fortress with a single thought.

Around the outer edges of the main platform, marble pillars could be seen as golden arches connected them and formed a circlet around the platform. Beneath the arches were bridges that connected to the other platforms and they were protected by a faint barrier which pulsed in sync with the golden runes on the main tower.

Each of the five platforms were filled with necessities to sustain itself should the world perish such as a farm land. Due to the nature of her anchor, there was a constant guarantee that the harvest would be good and there were custom models put in place to guarantee this even if the anchor didn't have special effects.

As for transport, Shiro had chambers with teleport marks ready. For example, if there was an ore vein that couldn't be moved easily, Shiro could link it up to a mark that she had set up in the chamber. With the fortress powering itself, she didn't need to manually recharge the marks so she didn't need to attend to them.

Plus, she had already made blueprints in her mind for items that allowed one to open a portal back to this place as an emergency. Plus, with divine energy and the teleport runes that Stanley had shown her, which ignored space seals, it was a guaranteed escape for her followers.

There were even models ready to manufacture an enhanced mana pulse bomb that she used during the shadow temple trial since she had more than enough mana to create one. With so many weapons and models in place, attacking this fortress was rather hard.

Just in case something did go wrong though, Shiro had a back up plan.

Should all of the barriers around the fortress be destroyed, it is able to create an emergency teleport mark and shift itself away from danger. Shifting locations instantly would be especially handy since there was a specialised mana detonator which was created using celestial path as a base. When it is teleporting, it will unleash a pulse of aura which seals mana for a few moments and it would delay the enemy slightly, giving it a chance to escape.

On top of this, the security placed around the fortress made it so that it was difficult for an assassin class to intrude without being discovered.

"So what do you think?" Shiro asked as she had a smile on her face. Despite looking a little pale thanks to the pressure she had put on her body, she was extremely proud of her creation since it could also suit people up with the mech suits that were armed with her weapons. Even some of the experimental ideas that she had thought of when she saw the mechs from anime's in New York were finalised.

If a person wanted a special mech they had seen online, she could create something similar granted that they gave her enough information. Otherwise it'll just look like it and not work in the same way.

"I don't know what to think about it since you basically laid the foundations for a whole new civilisation." Nan Tian chuckled while glancing at the fortress.

"Well I have to go all out since this is where the people will live if they decide to follow me. If I can't do my best to guarantee their safety, what kind of queen would I be?" Shiro smiled since that's her role as a queen. If people wanted to seek shelter, she wouldn't mind helping them since it wasn't too bothersome for her.

Plus, the more people that join, the more power she'll obtain from them thanks to her role as the queen. With her being recognised as a participant now, she is able to 'recruit' all of the spirits. Even though she'll be weakened for a while, the payoff is much better in the long run.

"Honestly, my main worry about the fortress was space since the last fortress I saw you make was small compared to this one but it still destroyed a city. For this, I'd say you can fit around 2 or maybe three cities? If anything, I'm worried that it's too much space." Isilia shrugged.

"Well if it's taking too much space I can always shrink it down whenever." Shiro glanced back at the fortress.

Snapping her fingers, the platforms started to shrink as the size was reduced by roughly 20%.

"This'll do for now I suppose. Once we get the spirits on this, I can enlarge it if there's anything else that's needed." Shiro said as the two nodded their heads.

"Here's a concern though. If you teleport this to the spirit capital, won't the humans notice this since it's rather hard to miss due to its size." Nan Tian said while glancing up at the fortress.

"Fufu~ I'm glad you asked." Shiro crossed her arms happily as a rune suddenly flashed on the main tower.

Despite seeing the fluctuation of mana visually, the two couldn't sense anything as the city slowly disappeared from sight.

"An illusion which blocks on mana senses by merging its 'signal' with the surroundings. Even though your eyes can see what's going on, your senses can't hence why it's perfect since it can hover over a city and no one would notice a thing.

"Of course, if you decide to fly up you might just bump into it." Shiro chuckled and launched a stray fireball up.

Suddenly, the fireball exploded in mid air but the fortress wasn't revealed.

"The only thing is that it's still present. You can't see it or sense it but spells and touch still work on it. So if it rains, well f*ck then." Shiro shrugged before snapping her fingers. Suddenly, it started to rain as the water was just blocked by the fortress. Even though it was invisible, the rain marked an outline of the city.

Showing off a few more features, they prepared to make their way back to the spirit capital. Entering the main tower, Nan Tian was surprised at the internal design since it looked like it came from the future.

The amount of information that could be displayed at a single thought was crazy but what's more impressive was that it was just a small part of what Shiro knew.

"Sometimes I wonder how your brain works for it to store this much information and you can just access it with ease." Nan Tian chuckled as Shiro shrugged.

"Thanks to the scientists I suppose. They messed me up but thanks to that I'm where I am at today." Shiro laughed as Isilia was happy to see that Shiro was casual in mentioning her past.

Previously, she had always been rather bloodthirsty whenever she thought back to the scientists since they experimented on her for years without stopping but seeing Shiro move on made Isilia feel happy.

Arriving at the top of the tower, Shiro snapped her fingers as displays lit up all around them, giving them a full view of surroundings.

Activating the magic circle, a giant portal opened up in front of them as the fortress started to move. Soon, the flying fortress disappeared from Astral Horizons.

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