Shedding her previous image of a mysterious, towering Yūrei-like figure, today's Yao Yao resembled a scientist, clad in a lab coat and wearing a pair of intellectual’s spectacles, standing in the central courtyard, deep in contemplation.

Upon seeing Lin Luo and Mikoto arrive at the Sky City with over ten thousand people, she immediately greeted them with excitement, "You lot have arrived just in time! Come, come, come, be my test subjects!"

"Ugh!" Mikoto, probably having been experimented on before, immediately went pale at the mention of it. She unleashed her maximum speed and shot towards the main hall, "I'm sorry, I need to go cultivate!"

"What's wrong? Big sister seems really scared?" Misaka Mizeri asked in confusion.

Of course she's scared. That's the first demoness in history—lawless, willful, self-important, unrivaled, a monstrous figure who appears once in ten millennia. How could one not be afraid?

Lin Luo grumbled internally but dared not speak it aloud, gesturing to Mizeri with his eyes to quiet down.

Mikoto fled, and Yao Yao didn't stop her. She walked towards Lin Luo, smiling as she spoke, "You little brat is quite filial. You knew I was in trouble and specifically prepared so many white mice for me. Hmm, teachable after all."

Swish!

As soon as Yao Yao spoke, Lin Luo felt over ten thousand pairs of eyes drill into him, the sharp gazes making cold sweat bead on his brow. If he didn't explain quickly, he worried he might be killed by their stares alone.

"Hey, hey, stop joking! When did I prepare any white mice for you? And what's this about experiments? These people are not for your testing!"

"What a stingy man!" Yao Yao didn't hesitate to cast a look of disdain at Lin Luo, then extended her right hand, revealing a white sphere of light to the crowd, "Do you know what this is?"

"A light egg?" Lin Luo looked for a moment and honestly stated his thoughts.

Bang!

Yao Yao delivered a swift flick to Lin Luo's forehead faster than lightning, "Light your sister's egg! Why don't you just call it a bare ass?!"

Lin Luo rubbed his head, on the verge of tears, while behind him, the more than ten thousand young ladies and Yūrei-like figures instantly changed expression. All this time, Lin Luo had only two words in their impression of him: Invincible!

No matter what happened, no matter the opponent, he could manipulate anyone in the palm of his hand. Yet now, this Yūrei-like woman in a lab coat could easily make Lin Luo tear up, and from the looks of it, Lin Luo didn't dare resist?

Kuroko's eyes lit up, watching Yao Yao with a face full of yearning, as if she had finally found an organization to rally under.

Shinki's eyes brightened, watching Yao Yao with anticipation, hoping she would hit Lin Luo a few more times.

Lola's eyes lit up, looking at Yao Yao with sheer disbelief plastered on her face.

Yuyuko's eyes also brightened, looking at... that sphere of light, it looked so delicious.

Yao Yao ignored everyone's expressions and cradled the light sphere as she explained, "Simply put, this is a virtual space I created. Let's call it the Main God Space. It contains countless virtual worlds. Anyone who touches it can randomly enter one of the worlds inside, completing missions to earn rewards. Those reward points can then be exchanged for various skills, allowing a person to become strong in the shortest amount of time."

"Ah!" Lin Luo was stunned. This... this was his own concept!

Damn it! This wicked demoness actually stole my idea!

Lin Luo was furious, but he only dared to question, not rage. "If that's the case, this thing seems complete. What trouble are you having then?"

"Truly foolish," Yao Yao seemed to treat scorning Lin Luo as a habit, taking pleasure in it, then continued, "Although it is complete, it only works on beings with physical bodies, and the weaker, the better. The guys currently staying in the Sky City wouldn't gain much meaning even if they entered."

Lin Luo considered it. It was indeed logical. For instance, if he entered the Main God Space, wouldn't he just crush everything? A slight surge in power, and he could even take down the Main God one-on-one. As for the other Hosts, most of them already possessed Heavenly Tier Intent, rendering it equally meaningless.

So then...

"That's why I said, bringing me this group of little ones is a huge help," Yao Yao revealed a smile reminiscent of an old man doting on a little girl, her gaze falling upon the group of maidens behind Lin Luo, "How about it? Tempting, isn't it? Action speaks louder than temptation. Enter the Main God Space, and I'll give you power."

"Is there good food inside?" Yuyuko asked first.

Yao Yao glanced at her, casually grabbed her, and tossed Yuyuko onto Lin Luo, saying impatiently, "You two go off and enjoy your romantic bliss elsewhere; this has nothing to do with you."

It was clear Yuyuko was not "qualified" to enter the Main God Space.

After all, perhaps the Main God Space would be eaten by her.

"Romantic bliss..." Lin Luo actually agreed, worried only that Yuyuko wouldn't comply.

Although Yao Yao kept calling them white mice and test subjects, the Main God Space was indeed very attractive. At least after Yao Yao's explanation, girls like Shinki Hishizaki and Shirai Kuroko were tempted. Even Misaka Mizeri was a little eager. Only Lola remained relatively rational, stating, "Since the returns are so high, the risks inside must also be immense, right?"

"Mm, you little brat said that quite well," Yao Yao nodded. That phrase, "little brat," made Lola so frustrated she wanted to spit blood. It had been ages since anyone had called her that.

However, Lola dared not retort. She was exceptionally astute; how could someone who could summon and dismiss Lin Luo at will be as simple as she appeared? Thus, she calmly accepted the term "little brat" and focused on listening.

"Risk is directly proportional to reward. To gain a 100% return, you must put in at least 100% effort. Therefore, in the Main God Space, a single misstep could lead to a deadly danger... Of course, since I created the Main God Space, whether you live or die is my final say. And since this is your first time, I will grant you a Cross of Rebirth..."

As Yao Yao elaborated, Lin Luo realized that not only was her combat prowess heaven-defying, but her persuasive skills rivaled a hundred salesmen. Seeing how those girls were already flushed with excitement—oh, no, ecstatic—he knew that including Lola, they all wanted a taste of the Main God Space.

Although it was a bit of a pity that the chief bishop he had recruited couldn't start her tenure immediately, he couldn't stop them if they desired strength. He decisively took Yuyuko's hand and headed toward the main hall, "Forget it, let's go."

"To enjoy romantic bliss?" Yuyuko asked innocently and naively.

"...You think too much," Lin Luo gave her a look. He wouldn't believe Yuyuko was innocent until the day Reimu stopped being shameless, the young lady stopped losing her dignity, and Purple Sister stopped spying. Only then would he believe Yuyuko was a pure girl.

But then again, that would likely be harder than him not starting a harem.

Leaving that large group to Yao Yao for the time being, Lin Luo enjoyed a moment of ease. Returning to the main hall, he first appeased Yuyuko with food, then summoned the head maid to inquire about the recent movements within the Sky City.

First, Tachibana Kanade, Fujibayashi Kyō, and Artoria had already entered the second level of cultivation, progressing rapidly. However, catching up to the other Hosts would still be difficult. To reach the main group soon, they were working exceptionally hard and would not emerge for some time.

Next, Hatsune Miku and Suzumiya Haruhi were both attempting to break through to the Heavenly Tier, so they were also unavailable. As for the other Hosts he had met previously, only ten days had passed in the Sky City, clearly not enough time for them to come out of seclusion. Even Ikaros was currently overwhelmed with tasks.

In the Sky City, the only Host he hadn't met last time, Tohsaka Rin, had emerged five days ago. Unfortunately, her competitive nature—determined not to lose to Mikoto—meant she re-entered the cultivation space two days ago, missing him by a narrow margin.

Finally, there were the six Heroic Spirits: Nero, Kuroya, Komoe, Nakamura Yuri, Shiina, and Sawada Mami. While their potential wasn't as high as the Hosts, they were still geniuses equipped with buggy skills, and their strength was rising significantly. They were currently still in the cultivation space.

In summary, he wouldn't see a single girl he'd returned for.

Of course, only ten days had passed in the Sky City; this was normal.

With the Agent God ahead and the Abyss Demons behind, the girls were working so hard. Lin Luo felt he couldn't slack off either. To reach the Heavenly Tier as soon as possible, there was no better day than today. He would use this opportunity to enter the next world.

He already knew which world it would be. Although he still hadn't grasped the meaning of the Golden Ocean and the Green Earth, since Araya claimed he was an aggregation of inverted causality lines, it stood to reason that he possessed worlds with inverted causality lines. Gensokyo was certainly one of them; otherwise, Yukari Yakumo wouldn't have said those things.

Then, the world of Rozen Maiden was likely another, and Suigintou was currently in Gensokyo.

Therefore, no matter how one looked at it, this journey must be... Gensokyo!

But to go to Gensokyo, he needed its coordinates, which were in Yuyuko's possession. Thus, the first thing to do was to sign a contract with Yuyuko.

...

His conversation with the head maid took over an hour. Lin Luo handed over the technological data obtained from the Abyss Demons, instructing her to pass it to Chō Suzune. He then took out the Void Breaker Blade and asked her to give it to Shiina... He had originally intended to give the Kirisame Sword to her as well, as these external artifacts were mostly useless to him now, but the Kirisame Sword was a "token of affection" given by Marisa, so he couldn't just give it away.

After completing all this, Lin Luo found Yuyuko gorging herself in the dining hall.

The survival purpose of this glutton was probably just to eat.

"Young man, I have been waiting for you for a long time." Upon seeing Lin Luo arrive, Yuyuko, contrary to her usual demeanor, stood up and approached him, a look on her face only a sage could possess. She smiled, "Sign a contract with me, become my permanent meal ticket."

"..." Lin Luo was struck by lightning again, swallowing his words in speechless frustration.

Director, this script is wrong?!

P.S.: Three chapters totaling ten thousand characters today, compensating for yesterday's shortfall. Also, this chapter feels rushed, but it can also be seen as tightly plotted. Next, I will start tying up loose ends and concluding. Therefore, the next arc: The Sun Rises in the East, Only I Am Unconquered!

Oh, wait!

The real name of the next arc: Regretless Entry into the East in This Life!