He unceremoniously gets straight to the point: "What is that strange energy?" ”

Zhang Xinyu subconsciously asked, "What strange energy?" ”

"Hmm...... It's the energy you used in battle before, and if you attach it to your weapon, it can emit a white glow. Pen, fun, pavilion www. biquge。 info" Akihiko Hayba used both hands and feet to describe the scene when the girl and Kirito were fighting, and her expression was slightly excited.

These exaggerated movements, which do not fit his size, make him look a little funny.

Zhang Xinyu did not laugh at his behavior, in her opinion, people who have the courage to pursue their dreams and explore the unknown are the most respectable.

Even if such an act comes at the cost of many lives, its greatness cannot be erased, to paraphrase Ollivander in Harry Potter about Voldemort---

"It's scary, but it's ...... It's remarkable. ”

"Do you mean 'Source Force'?"

"Source Force...... The power of the cosmic roots? Akihiko Kayaba muttered to himself in an imperceptible voice, and then praised surprisingly: "...... What a fitting name. ”

"Source power is one of the names we have there, compared to this name, most people prefer to call it dark energy, because only after the dark energy is inhaled into the human body, the converted energy can be called the source force, before that it existed in the form of dark energy."

The moment the words fell, the girl clearly saw that Akihiko Kayaba's expression had changed, and it had become very exciting.

Remorse, surprise, curiosity, all kinds of emotions appeared on his face, but the largest proportion was surprise and epiphany.

"What's wrong?" Zhang Xinyu couldn't help but ask.

"If it's dark energy, I probably know what you're talking about, but I didn't expect that kind of thing to be absorbed by humans......" Kayaba Akihiko smiled bitterly as he said this.

In December 1997, Robert Kirchner, an astronomer at Harvard University who was a member of the "Great Redshift Supernova Search Team", showed that the expansion of the universe was not slowed down by its own gravity, but by an invisible, unexplained, mysterious force that controlled and propelled it.

People speculate that the universe may be under the control and action of a state of matter that humans do not yet understand and recognize after the solid, liquid, gaseous, and "field" state of matter.

This substance is different from all the properties of ordinary matter and its existence and mechanism of action.

Because it is absolutely different from the well-known ordinary dark energy state of matter, scientists call it "dark matter" and its function "dark energy" in order to distinguish them.

This is where the term "dark energy" comes from in the first place.

As a scientist, although he is engaged in a different direction from cosmology, he has long been familiar with the intellectual arguments related to energy, so as soon as Zhang Xinyu put it forward, he immediately reacted.

Not to mention, in order to improve the holographic virtual game, he also reviewed it repeatedly a few days ago.

Dark energy and dark matter do not absorb, reflect or radiate light, so humans cannot directly use existing technology to observe, so he has always regretted it, but he did not expect to be able to get the answer here today.

As soon as he thought of this, Kayaba Akihiko's backwater-like heart suddenly jumped, and then burst out with an unknown strange emotion.

This strange feeling is hot and intense, like a child about to get candy.

For a while, the adrenal hormones of middle-aged scientists began to rise rapidly.

He couldn't help the doubts in his heart and asked, "So what kind of substance is dark energy?" What is the law of its variation? How is it presented? What is its effect on the human body? ”

Several questions blurted out one after another, as fast as a machine gun.

"Actually...... I don't know much about ...... either."

Faced with such a scene, the originally calm girl was unusually embarrassed, and her red face looked very cute.

For a moment, Akihiko Aoba was dumbfounded, but he didn't expect the result he had been waiting for was that he didn't know! In those huge eyes, you can even clearly see bloodshot eyeballs.

Born due to irregular work and rest, thin blood like a small snake, is wrapped around it one by one, looking quite terrifying.

And this scene that can scare ordinary girls, but it was unexpectedly ignored by Zhang Xinyu and others.

Kayaba Jinghiko stared at the girl for a long time, and after confirming that she was not lying, she asked in a dull tone, "Why...... Why wouldn't you know? ”

"That...... That one...... Actually, my academic performance is not very good, and I don't remember these things very clearly......" Zhang Xinyu's face was full of shame, lowered her head and whispered, her white and small ears were gradually dyed red.

Not long after she crossed over, how could she know such profound things!

Holding back the desire to complain, Zhang Xinyu found a suitable reason to perfunctory the mad scientist in front of him.

After pondering for a long time, Kayaba Jinghiko finally made up his mind, looked directly at the girl and said, "You use that energy to show me!" ”

Hearing this, Zhang Xinyu had no choice but to raise her right hand helplessly.

And then...... A miracle happens!

Slowly, some white points of light appeared in the void, like a beating elf, slowly attached to the girl's palm, and the slender wrist was wrapped in visible white, as if wearing a white silk glove.

Akihiko Kayaba stared at the point of light with confused eyes, and he didn't know what he was thinking for a moment.

By the time he shouted to stop again, the girl could barely maintain the consumption of source power.

"Okay, the deal is complete, you can go, I'll contact you if there's anything!" Kayaba Kizuhiko waved his right hand and regained the smile he had when he first saw the girl, but there was some obvious impatience on his face, and he didn't seem to be in a good mood.

With a wave of his hand, the surrounding environment changed again, Zhang Xinyu was sent back to the small room of the hotel, and the figure of Akihiko Kayaba disappeared.

The huge change in attitude before and after made the girl involuntarily have doubts.

But now there is no way to verify, so she has no choice but to choose to return with doubts.

Consciousness sank into the system, Zhang Xinyu clicked back on the golden system panel of the sao bag, and when she opened her eyes again, everything in front of her was only white, which was the moonlight...... White......!

At the same time, the ears also sounded with the rigid system prompt sound that the girl was familiar with---

For some reason, the world line of Sword Art Online has changed dramatically, and the host's special move is rewarded: One Sword Shura!

The girl couldn't help but fall into deep thought......

Sure enough, what happened, otherwise that little fight would never change the world line, Zhang Xinyu's mind repeatedly flashed the scene when he was talking to Akihiko Kayaba, but he still couldn't find out what went wrong.

Helpless, she could only look at the two new skills.

Yes, two skills, one is "One Sword Shura" and the other is ...... "Knight Doesn't Die with His Bare Hands (Weakened Version)"!