In Tokyo, the dungeon master

Her mind went blank, and suddenly a thought flashed through her mind: should she learn from TikTok short dramas and say, "The four hundred-year period has come, welcome back the Ancestor!"?

"Yes, you heard me right, child."

"Don't be so surprised. I'm just an insignificant passerby. Didn't you also suspect I might have some kind of background? If it weren't for the connection of our bloodlines, I wouldn't have descended upon you and your daughter."

"..."

Shirakawa Manka remained silent, though she had considered the possibility that the other party might have a significant background...

After all, she suspected that Gu Menghe had some kind of ancestral agreement, and perhaps he was a legendary Yin-Yang Master with unofficial histories during his lifetime...

However, even unofficial historical accounts shouldn't be this unofficial!

She never imagined that the other person was actually the top ancestor in the family tree; this felt completely different!

Moreover, aside from his identity as an ancestor, Donghai Yixin was originally the founder of the Donghai Kingdom, a sword saint, a usurper, and the leader of an ancient Shinto branch...

There are countless anecdotes and legends about him. He was a figure far beyond what Shirakawa Manka could have imagined, no different from randomly drawing an ancient Onmyoji and ending up with Abe no Seimei.

They are not "insignificant passersby".

Historically, Donghai has committed numerous evil deeds, including performing evil rituals, acquiring forbidden powers, researching mutated monsters, exploring the universe, and spreading doomsday prophecies.

There are even bizarre and contradictory rumors that he has become a god.

According to the Shirakawa family records, many of the family's ancestral legends were intentionally erased after the Meiji Restoration, due to conflicts with the Shinto "living god" imperial family.

Some historians even say that, based on various pieces of evidence, the story of Donghai Yixin does not exist; it is merely a myth fabricated by the Donghai Kingdom.

By the way, could it be that the title "Lord of the Sun," which clearly oversteps the authority of Amaterasu and the Imperial Family, is also part of history that has been erased?

The feeling of a legend coming to life filled Shirakawa Manka with both excitement and trepidation.

Gu Meng continued talking to himself, oblivious to the impact he was having on Shirakawa Banka:

"I was thinking about whether to keep it from you, since it would be a little embarrassing for a junior like you to introduce yourself. I'm in such a bad state now, it's quite shameful."

But then I thought, it's not something worth hiding, so I've decided that whenever you ask about my identity, I'll tell you..."

After Gu Meng announced his true name in this world, he thought about the several types of instances that could be created using the Book of Ancestors. Of course, there are various restrictions on creating instances using the Book of Ancestors; otherwise, it would be arbitrary creation.

Currently, this function cannot generate large-scale alternate dimensions, nor can it involve time travel. It can only generate false existences with magic, and then distort these false existences into reality with the power of the universe.

For example, a dungeon is created, and there is a treasure after clearing it. Gu Meng obtains the treasure and temporarily increases his strength. Then, by using Hengyu Anchor to ensure that the strength only increases and never decreases, the fake becomes real, and the result is that Gu Meng clears the dungeon and increases his strength.

This may seem easy—like stepping on your own two feet to ascend to heaven—but there are many hurdles to overcome.

The rules are complicated, and someone else might not be able to figure out such a difficult cheat code.

If a created instance has very special settings, such as creating a special entity similar to the Holy Grail, at least the following conditions must be met simultaneously. These are the rules that Gu Meng summarized when trying to simulate creating various instances over the past few days. There should also be some hidden rules that can be further optimized to save mana:

First, it is necessary to lay the groundwork and guide those who have been infected. Larger dungeons require more or stronger infected individuals to participate. Currently, Gu Meng only has one Tier 1 infected individual, Bai Chuan Wan Hua, and one Tier 0 infected individual, Bai Chuan Qian Yu Nai. Therefore, the maximum strength of dungeon monsters and NPC avatars is only Tier 2. The number can be increased, but more magic power is required.

These dungeon monsters are all illusions. If the quota of Hengyu Power is used for anchoring, they can be used as keys to advance to other-dimensional dungeons in the future. When Gu Meng descended into this world, his pseudo-identity Donghai Yixin, which was inserted into the timeline, was a kind of innate key.

Secondly, before opening a dungeon, a certain number of viewers should be guided and informed. It cannot be done in complete secrecy. For low-level dungeons, it is enough for a few people to know. As the number of viewers increases and the imagination grows, the mana consumption can be reduced.

Third, the creation of the replica must be based on the legends that Gu Meng had imagined in his own mind... This is a completely idealistic rule. Gu Meng cannot fabricate a replica that he thinks is unreasonable, that he has never heard of, or that has no origin at all. The more it conforms to the cognitive conditions, the more perfectly it can be reproduced.

Moreover, this process cannot be self-hypnotized, or rather, it will come at an irreversible cost.

These are just the currently available features in the [Darkest World]. The Book of Ancestors will definitely also have fantasy dungeons and time-traveling dungeons.

What Gu Meng currently knows is that by continuing to advance his rank, he can activate the [Darkest World] on the page recording Donghai Yixin, travel to his era, verify his history, and confirm those unclear places.

Although it was difficult to use, Gu Meng gradually grew to like the feeling of building worlds, just as addicted as writing about everything with a quill pen in his previous life.

This world lacks Destruction Dungeons, Endless Trial Forests, Towers of Despair, and Darkest Dungeons, but thankfully the Book of Ancestors fills the gap.

This book may have the potential to become the main god space in the future.

……

We've already traversed this area through time and space; we'll explore it later. The current stage remains Tokyo.

Gu Meng's initial goals were still to advance in rank and regain his physical body.

Among the more suitable treasure types, those related to universal energy templates like the Source of Magic and Fantasy Crystals have higher conversion rates, allowing for more efficient early-game development... Considering the need for resurrection, if there's a tangible manifestation of the soul's essence...

The Holy Grail is something Gu Meng really wants, so there's no reason not to prioritize acquiring it.

When Gu Menggang transmigrated, he had two Dark Seeds. After upgrading to Tier 1, he had four. If he needed to collect at least seven for the Holy Grail War, then upgrading to Tier 1 would allow him to attempt it.

In my self-perception, the upper limit of Servants is high and the lower limit is low. The strong ones should be above the fourth rank, but there are also many weak Servants in the first, second and third ranks. If this version is a bit weak, then let's just turn it into a modern Holy Grail War.

Thinking about the future, Gu Meng said to his wife:

"Once we seal those monsters, the Holy Grail War might begin. If we have the resources, perhaps we can team up to participate. My real name needs to be kept secret. To avoid leaks, you can just call me Master from now on."

"The Holy Grail War? What's that? A war in Tokyo? Besides monsters, are there other missions? Are we magical girls that busy?" Shirakawa Manka had too many questions in her mind, not knowing which one to ask.

Just then, the guests who had been waiting arrived.

The door to Shirakawa Manka's house opened automatically.

Outside the door stood a familiar blonde woman with fair skin. Because he was about to see his wife, even in this emergency, Shihōin Kyoka still made sure he was impeccably dressed.

She was preparing to meet her wife again in the most elegant manner when, unexpectedly, the door opened automatically at the right moment.

"It's been a long time. No, I should say I didn't expect to see you again so soon, Ms. Shihouin."

"Excuse me, sir." Shihōin Kyoka really didn't know how to address the other party.

"You can call me mentor, or Mr. Sun."

"Okay, Mr. Sun."

Kyoka Shihōin appears very compliant now. It seems that she had given it some thought before coming and rehearsed how to deal with an extraordinary being.

Gu Meng nodded: "Very good. To commend your wisdom and courage, I will reward you handsomely."

So he ejected his precious third infection seed and launched it into the other person's body.

The seed of the Tree of Life was planted within Shihōin Kyoka's body.

Although it's not as simple and convenient as magical girl games in the early stages, where you can gain magic power just by meditating, it almost replicates the essence of the witch school that Gu Meng knew in his previous life. The information, knowledge, and potential contained within... were personally integrated by Master Gu Meng.

It can be said that the value of this seed far exceeds that of the so-called magical girl mark. Compared to the two, the magical girls that Gu Meng does not understand are just castles in the air, illusions, and familiars.

The witch's path is the Tower of Babel, which leads to the heavens. If no god intervenes, there is a sliver of hope that she can ascend to the realm of the gods with human wisdom.

……