After learning the true identity of this mysterious substance from the goddess, Fang Zheng was completely speechless. However, the goddess' last words still caught Fang Zheng's attention.

"After all, it is something that the goddess once used. It is normal for it to have an effect on mortals."

Although this sentence sounds fine, if it is true, then Fang Zheng's original idea would be overturned.

He originally thought that this was the ability of the mysterious substance itself, but now it seems... it's just because it's contaminated with the power of the goddess?

Wait, if the goddess's divine power is all that matters, then what about my own divine power?

Thinking of this, Fang Zheng once again took out the samples of Riko, Ruiko and Flanda, then stretched out his hand. Soon, a burning fire emerged from Fang Zheng's fingertips, and then the heat quickly spread... Then, Fang Zheng immediately observed that almost at the same time as his divine power was released, the sample structures of the three people began to react at the same time - and it was a more intense reaction than the radiation released by the previous substance.

If you think about it carefully, this is normal. After all, the substance Fang Zheng used in Riko is less than one milligram. In addition, the goddess is dead, and the remaining divine power must be extremely weak. Fang Zheng himself is a living and breathing god, and his divine power must be much stronger than the few milligrams left by the goddess.

If Fang Zheng's current divine power is not as good as the one left by the goddess, then he might as well just go home and live a life of debauchery.

But... thinking of this, Fang Zheng suddenly thought of another question.

If that’s the case, what about others?

"Nymph."

"exist."

"Send some samples of Kurumi, Eriri, and Natsuyo over here."

"yes."

Tiandao Palace also conducts regular physical examinations, and the girls' blood samples must have been backed up. Soon, a small space-time hole opened in front of Fang Zheng, and several well-sealed samples emerged from it. Fang Zheng then took the samples and conducted another experiment in the same way.

But what surprised Fang Zheng was that this time his divine power only had a little effect on Kurumi and Natsuyo, while the samples of Eriri and Asuna showed no reaction at all.

What's going on?

If we just talk about the genetic level, there is absolutely no difference between Asuna, Eriri and Ruiko. They are all standard humans in terms of DNA structure and chromosomes. However, when faced with Fang Zheng's divine power, Asuna and the others did not react at all.

Could it be that this has something to do with the nature of the world?

Fang Zheng still remembered that Asuna and the others were in a game world. Although there were angels and vampires in that world, humans were just ordinary humans. It seemed that there were no superpowers. Kuang San's spirit crystal had already taken shape, and Xia Shi and the others had been adjusted by the insect swarm...

After that, Fang Zheng found samples of Fate, Nanoha, and Sakura for comparison, and found the same result. When his divine power was applied, these samples of girls with "mystery" in the essence of the world would react to a certain extent, but they would not mutate. At least from the data point of view, it was a bit like an overall enhancement buff.

But they won't "mutate" like Saten and Riko.

In a world like Asuna's, where there is no special human setting, it is difficult for her to be affected by divine power.

From this point of view, maybe Setsuna and Miki will not be of any use either? But it is hard to say...

But because of this, Fang Zheng figured out the key to improving his abilities.

Simply put, it requires divine catalysis...

That's easy.

If it was the special ability of this mysterious substance, then Fang Zheng probably had no good solution. But on the other hand, since the ability could be improved by using divine power catalysis, it would be much simpler.

There is a problem though.

Neither the power of the Goddess of Creation nor Fang Zheng's power could completely mutate them. It could be said that when the power took effect, these genes could mutate, but after the power disappeared, they returned to their original state. It was a bit like pumping air into a balloon. It would only swell up if it was inflated, and it would shrink immediately if it was not inflated.

Only when Fang Zheng "injects" divine power into it, will this mutation be fixed instead of returning to its original form.

But this is a bit puzzling...

The divine power is a bit like the inner strength in martial arts novels, invisible and intangible, although Fang Zheng can also directly draw out his own blood and inject it. But if it is a simple biological experiment, it is fine, but if it is a human experiment, the risk is too high, it is better to directly choose to sign a contract with the other party and become a magical girl, which is safer.

So in the end, Fang Zheng found Li Zi and explained the situation to her.

"…So, for now, you have two choices. The first is to sign a contract with me and become a magical girl. The contract itself will then activate your essence, granting you a variation of power according to your essence. The second is to conduct an experiment and ensure that your genetic mutation is fixed by injecting divine power…but frankly, this is somewhat dangerous."

“Woo…”

After listening to Fang Zheng's introduction, Lizi was a little hesitant. She knew that Fang Zheng had great power, and rationally speaking, the first option was the best choice, but...

Thinking of this, Riko's eyes suddenly lit up.

"Then Mr. Fang Zheng, can I have them all?"

“…Huh?”

"You said the second method is dangerous, but if I become a magical girl and then..."

"Once you become a magical girl, you won't be affected anymore... Because signing a contract to become a magical girl is equivalent to a mutation. The possibility of a second mutation is too small. And I won't agree to this method because there is no precedent."

Fang Zheng refused as a matter of course.

Just kidding, adults want everything, you are still a little girl.

“Oh…I see…then…then…”

After hearing Fang Zheng's answer, Li Zi was distressed for a long time, and then gritted her teeth.

"I choose the second one!"

"Are you sure? I have to say in advance that I don't know what effects or problems this will cause. If something goes wrong, you might die."

"Even though I say that, I still want to give it a try!"

Having said that, Riko clenched her fists and a rare serious expression appeared on her face.

"This is the power of our Lupin family, and I will prove that I am worthy of the name Lupin IV! Our Lupin family will never surrender in the face of difficulties! Moreover, I also have the blood of my great-grandfather, and I will definitely be able to successfully stimulate Lupin's power!"

"Well, now that you've said this, I have nothing more to say."

Facing Li Zi's answer, Fang Zheng silently shook his head. This was Li Zi's choice, and since she had made her choice, Fang Zheng naturally would not dissuade her.

"But you have to be mentally prepared, okay?"

"Why……?"

Soon, Lizi knew what Fang Zheng meant.

"Um...Mr. Fang Zheng, do you really want to take off all of them?"

Standing in the cold room, Li Zi blushed with some uneasiness, looking at Fang Zheng, who nodded.

"That's right. Judging from the ability you displayed when you wore the cross, your ability may be physical transformation. The power I will inject into you will stimulate the mutant genes in your body to the maximum extent. In other words, by that time, your power will definitely exceed the level you currently control, and no one knows what you will become by then. Therefore, the less artificial substances in your body, the better. You don't want to find something like a hairpin or a skirt stuck in your body when you return to your original form."

“Woo…”

Just imagining that scene, Riko's face turned pale.

"Absolutely, absolutely not..."

"So do you want to continue? Or do you choose to give up?"

"……continue."

Although Riko looked petite and weak, she was a very determined person. After all, even though she was locked in a cage by Vlad for several years, she never gave up resistance. Naturally, she would not give up because of such a small setback. Soon, Riko changed her clothes in the dressing room, and then walked out shyly in pajamas.

"Stand with your back to me and take off your clothes. Don't worry, I'll be watching you."

"Um……"

Hearing Fang Zheng's words, Li Zi took a deep breath, then took off her pajamas, stood with her back to Fang Zheng and closed her eyes.

Even so, from her rapid breathing, it can be heard that she is obviously not very calm...which is understandable.

Fang Zheng stretched out his finger, and soon, a flame appeared at his fingertips. The flame was so weak that it seemed that it would be extinguished by the wind. However, even so, Fang Zheng still stared at the flame in his hand. Under his gaze, the flame became weaker and weaker, and in the end, only a wisp of orange-red light, almost the size of a hair, remained.

At first glance, it seems like some kind of illusion.

Then, Fang Zheng looked at Riko's back and flicked his fingers lightly.

The next moment, a strand of orange-red light as thin as a hair shot out and entered Riko's body. At the same time, Riko's body trembled slightly.

"Wow... I feel a little hot, what is this..."

"Now that the injection is complete, how do you feel?"

"It doesn't seem to feel particularly strange..."

Riko carefully moved her arms and legs and tilted her head.

"Mr. Fang Zheng, why do I feel——!"

However, before Riko could finish her words, her voice suddenly became sharp and long. At the same time, the appearance of the girl in front of Fang Zheng suddenly changed in an unimaginable way!