"Is this the so-called witch?" Bai Mo put his hands in his pockets and looked calmly at the twisted thing in front of him.

After Kyubey used some tricks, Bai Mo was already able to "see" the appearance of the witch's barrier.

Under the dividing line between black and white, the entrance and exit of the alley are coupled and linked to each other. Looking inside from the entrance, the world inside is a reversed world.

This is the witch's barrier. Inside the barrier is the witch's world. Through observation from the outside, Bai Mo can only see a layer of external image.

The spiral fragments took root in the earth, the sky was dark and overcast, and black and white pigments swam in the water, occasionally changing into some meaningless patterns.

"Yes, this is the witch."

Kyubey shook his tail and introduced: "A magical girl's mature form after the Soul Gem was completely contaminated."

"A witch is born, but there is no magical girl to destroy her?"

Listening to Baimo's question, Kyubey explained: "The magical girl was killed by the witch."

"The magical girl was killed by the witch. No, that seems to be right. It's a counterattack. It's reasonable." Bai Mo nodded.

Every time, the magic girl defeats the witch, and hope and love defeat despair and hatred again and again. This is the plot that only appears in stage plays. If there is a mistake in a real battle, the magic girl will be killed by the witch.

Compared to witches, who are completely different, the actual combat effectiveness of magical girls is uneven. The natural differences in personality and upbringing will inevitably lead to some magical girls being very strong and some being very weak. In the battles of magical girls, it is not surprising that some are killed in return.

"Witch, since she's a magical girl, what's her wish, to save the world or to become a superhero."

Kyubey responded, "Eliminate the bullies."

“… a clichéd plot.”

These things cannot be eliminated. As long as there are still words like “It takes two to tango”, “Why doesn’t she/he bully you but others”, “Why don’t you look for the reason in yourself”, “I saw it all, you participated in the fight”, “Don’t you know how to give way”..., bullying will never be reduced and such contradictions and conflicts are bound to exist.

After a pause, Bai Mo asked, "Is it the magic girl who will defeat the witch next?"

"Yes." Kyubey jumped on Baimo's left shoulder.

"Will she continue to expand the territory of the witch's barrier?"

“It will not expand.”

Bai Mo rubbed his wrists and let go of some thoughts in his heart.

Since it won't expand the witch's barrier, it won't disturb me, so there's no need to worry about it.

"Witch, only magical girls can fight against it?"

Kyubey nodded and answered, "Yes, physical attacks without magic power cannot harm witches. Only the power of magical girls can have an effect on witches."

Only a magical girl can defeat a witch, and only the former can cause damage to the latter.

"Your technology is not good enough?" Bai Mo raised his eyebrows.

If it were someone else, for example, modern technological weapons, nuclear bombs and the like would have no effect on the witch, then Bai Mo would still have some faith.

But you, the ultimate civilization that is preparing to experiment with anti-entropy, actually say that it cannot cause any impact. Isn’t that a bit too outrageous?

"..."

Bai Mo paused, pinched the back of Kyubey's neck with his fingers, and shook it: "You created the witch, and you can't influence her?"

"can."

Kyubey gave his answer.

After looking at the time left for class, Bai Mo picked up Kyubey, put it on his shoulder, turned around and walked away quickly.

Shortly after Baimo left, Homura Akemi walked to where Baimo was standing and stopped. She looked up at the location of the witch's barrier with a serious look in her eyes.

"Kyubi."

"What's the matter?"

Kyubey jumped out from the gap in the corner and appeared in front of Homura Akemi with his head tilted. "How did you influence the birth of the witch?"

For Homura Akemi, who has always regarded witches as enemies, this is the answer she must know.

"Observation."

"........."

The answer is simple. By observing the process, it was found that the birth of the witch was interfered with by Kyubey and the Incubator.

Homura Akemi rubbed her forehead and felt powerless.

Observation can interfere with the birth of the witch. Kyubey will not lie, and the truth is the most terrifying sword.

How to observe and apply it to fight against Witch Night is an unsolvable problem.

Homura Akemi is not the hatcher Kyubey, and the huge essential gap between the two is inevitable.

While Homura Akemi was struggling with how to do it, Baimo held Kyubey and chatted casually, "What does the universe look like?"

"The universe is a closed system."

"Closed and unable to open?"

"The known observable universe is a closed system, and what lies beyond the observable range is unknown."

Bai Mo wrote down these contents and continued to ask Qibi questions.

"So, making magical girls can collect emotional entropy and soul energy."

Bai Mo shook his head and stopped chatting.

In a closed system, no matter what you do, it will eventually lead to heat death due to the increase of entropy towards chaos.

The entropy (disorder) of the universe is constantly increasing, and will eventually lead to a hopeless heat death!

"…Qubi, is there a possibility that there is a life form that can adapt to entropy?"

At Bai Mo's wild imagination, Qiu Bi tilted his head: "It's impossible. No life can fit in with entropy, which is always chaotic, ever-changing, and moving towards the unknown."

Entropy and constancy are two conflicting concepts.

Bai Mo rubbed the Quppy's fur and chuckled, "Let your thoughts run wild. Just treat it as a guess, or an idea for a novel."

"For example, some lives can evolve, cultivate immortality, and ascend to become lives of cosmic size, such as Pangu creating the world."

"Impossible." Kyubey answered clearly: "The law of increasing entropy cannot be violated. This is the law of the universe."

Bai Mo snapped his fingers and changed the subject: "You said mine is unknown, what does that mean?"

Kyubey tilted his head and looked at Baimo, giving an answer based on the facts he had set.

“The unknown variable outside the calculation.”

Bai Mo nodded. Based on his current understanding of Kyubey, he understood what the "unknown" and "variable" meant.

A sci-fi alien who can basically be said to have mastered the power of "making wishes come true" chooses magical girls and witches to obtain soul energy in order to cope with the ultimate doomsday entropy increase of the universe. He tries to create another possibility by studying the laws of emotional entropy and entropy transformation.

Essentially, what is its purpose? Based on what it expresses, we can easily infer the result - to change the entropy increase and heat death of the universe.

If the universe is set as a closed system, then I am a variable that makes this system no longer closed.

Bai Mo thought in his heart, returned to the classroom, sat down, and flipped through the math extracurricular reading books on the table.

In any case, let’s find a way to gain more knowledge first.

"But Kyubey, there is really no possibility that, for example, entropy comes alive, or the universe comes alive. Or it can be understood that entropy has human nature, becomes a kind of intelligent life, and the way of heaven becomes spirit." (End of this chapter)