I am Möbius's sister.

Shortly after her clothes hit the ground, Celine was left only in her underwear; the rest of her clothes were folded on a chair nearby.

Her face was flushed, her head was hunched, her eyes were alluring, and her large expanse of snow-white skin seemed to be dazzling, but this beautiful scene could only be appreciated by Möbius alone.

"Is this...okay?" Sirin asked in a very soft voice, and you could tell from her words that she was still a little shy.

"Okay, that's fine. Stand still and don't move. I'll do the last step." Möbius smiled and slowly approached Sirin.

She crouched down and pulled Xilin into her arms, slowly strapping the device to Xilin's body. Every time her slender fingers brushed against Xilin's skin, Xilin couldn't help but feel a strange sensation, and her legs involuntarily tightened.

Fortunately, Mebius was quick and soon strapped all the instruments to Sirin's body before releasing her.

Möbius's withdrawal relieved Celine, but for some reason, she felt a sense of loss. What was she feeling lost about? Celine felt a little annoyed, but then Möbius's words brought her back to reality.

“Next, I will go into the observation room next door, and then I will turn on those instruments and pull back the curtain. There is a sound transmission device here. I will then guide your actions according to your physical condition. If you feel uncomfortable anywhere, you must tell me, and I will stop the experiment. Do you understand?” Möbius instructed Sirin.

Coming to her senses, Sirin nodded slightly, responding to Möbius's words, "I understand." However, her mind was still a mess. What was wrong with her?

"Then... let the experiment begin..." After saying this, Möbius rubbed Sirin's head, then quickly turned and left. After the sound of the laboratory door closing faded, Sirin was left alone in the huge laboratory.

After glancing at the spot where Möbius had left, Sirin sighed helplessly, cleared her mind of all distractions, and waited for the experiment to begin.

……

With a long whistle-like sound, the curtain on the wall was slowly pulled up, revealing a large, transparent, glass-like object. However, its luster did not resemble glass. This glass-like object seemed to be bidirectional; Sirin could see Möbius in the observation room, and Möbius could also see her.

"Alright, Sirin, all the instruments are fully calibrated. We can begin approaching the Herrscher core now." The instruction came from the communication device next to Sirin. Sirin glanced at Möbius, who was staring intently at the instrument screen in the observation room, and walked step by step toward the Herrscher core.

Although she could walk faster, she deliberately walked much slower so that Möbius could better observe the data.

Sirin couldn't help but mentally criticize herself; there weren't many guinea pigs like her, were there? Well, what could she do? The person who wanted to study her was Möbius. As long as there was no danger, cooperating with Möbius's experiments was acceptable. Sirin wouldn't even give a damn about anyone else.

This is what differential treatment is.

As Sirin approached the Herrscher core, she noticed that the Herrscher core within her body seemed to be starting to stir. The closer she got, the more obvious the stirring became, and a little blood seeped from the wound on her lower abdomen, giving her the feeling that she was about to become a Herrscher.

However, she did not stop there. Instead, she quickened her pace and approached the core of the Herrscher of Thunder. Before long, she arrived in front of the Herrscher's core.

Strangely, as she got closer, the Herrscher core within her suddenly calmed down, which was very odd. The previous agitation was like a dream of Sirin's, which undoubtedly made Sirin even more curious.

Meanwhile, Mebius, sitting in the observation room, was breathing heavily. Although she tried her best to suppress her emotions, her face still showed an expression of great excitement.

The sudden agitation of Sirin's Herrscher core was naturally detected by the instruments on her body, which was what excited Mebius. Through the data displayed by the instruments, Mebius discovered that the closer Sirin got to the Herrscher core of the Herrscher of Thunder, the more intense the reaction of the Herrscher core within her body became.

This intense reaction was almost like spotting prey; it wasn't resonance, but rather, if one had to use a metaphor, it would probably be appetite.

Furthermore, she detected that when the Herrscher core was agitated, Sirin's cells also suddenly became more active, which led to Sirin showing signs of Herrscher transformation.

However, this restlessness came to an abrupt end when Sirin arrived in front of the core of the Herrscher of Thunder, like the calm before a storm.

"Sirin, you can take the core of the Herrscher of Thunder now." Mebius tried to command Sirin in a calm tone, but upon closer listening, her voice was still trembling slightly with excitement.

Upon receiving Mebius's instructions, Sirin reached out her hand towards the Herrscher of Thunder's core and finally grasped it tightly in her palm. This Herrscher core was a rhomboid crystal, which was very beautiful.

When Sirin grasped the Herrscher of Thunder's core, she was surprised to find that the Honkai energy within her own Herrscher core was rapidly flowing into the Herrscher of Thunder's core, and then quickly flowing back into her body and being absorbed by her cells. Sirin was puzzled when she heard the system notification.

The special storyline [The Third Gem on the Crown] has been completed. Rewards for this storyline will not be issued by this system. Once the Honkai energy within the Herrscher of Thunder's core is completely absorbed, you will obtain the Herrscher of Thunder's power.

The storyline [Mébius's Experiment] has been completed. Rewards will be distributed in an undisturbed environment.

Hearing the system's notification, Sirin couldn't help but show a surprised expression. She thought that the system meant it would analyze the Herrscher core and then copy its power, but it seemed that she herself was copying the power in the Herrscher core.

She could feel the Honkai energy within her body constantly increasing, and her power seemed to be rapidly increasing as well. Even the wound on her abdomen was healing quickly. At that moment, she suddenly heard a system notification in her ear.

[Möbius's favorability +5, current favorability is 76. Möbius regards you as the most important person, both in terms of interests and emotions.]

Xilin blinked and tilted her head in confusion.

Meanwhile, in the observation room, Mebius clutched his heaving chest, a strange blush creeping onto his cheeks.

She stared intently at the instrument screen, her gaze sharp, but soon, Mebius calmed down. On the instrument screen, Sirin's various data, including her Honkai energy level, were rapidly increasing. At this moment, Sirin herself was equivalent to a high-power Honkai energy reactor.

Meanwhile, the Honkai energy content in the Herrscher of Thunder's core was rapidly decreasing. When it dropped to zero, Sirin's Honkai energy level also broke through to a new stage.

If Sirin and Alicia could have been a match for her Herrscher form before, now even Alicia is probably no match for Sirin in terms of power, unless Sirin's carelessness and arrogance lead to her downfall.

Mebius took a deep breath and glanced at the data on the instrument screen. Sirin's Honkai energy level had actually dropped back to its original level, but according to his monitoring of the Honkai energy flow in her body, her cell activity had increased significantly.

Looking at these data, Mebius believed that if Sirin could continue to grow, she would be able to surpass the strength of a Herrscher even without becoming one.

After reviewing the data several more times, Möbius destroyed all the valuable data from this experiment. She had already memorized the important information, and there was no need to keep these potential problems.

After shutting down the equipment, Mebius stepped out of the isolation room. The Honkai energy in the laboratory had now been completely absorbed by Sirin, and it was now safe to enter without protective clothing.

As soon as he entered the laboratory, Möbius went to Sirin and gently stroked her head: "Sirin, well done. I like you more and more. You always give me great surprises. You are indeed the most special one."

Mebius's gaze was slightly strange, causing Sirin to shrink back involuntarily. Why did she always have the feeling that she was being watched by something?

Chapter 50 The Dilemma of Sirin

"Cirin, put on your clothes. The experiment is over, and your injuries are almost healed. There's one more experiment to go outside. I want to see just how much your strength has increased." A blush still lingered on Mebius's face as she gently stroked Sirin's skin, her eyes filled with intoxication.

What a beautiful life, what a powerful life, this is truly... amazing!

Feeling the slightly burning gaze of Möbius, Sirin couldn't help but swallow. Although Möbius's favorability towards her had reached 76, why did she feel that she was becoming more and more dangerous?

Under Mebius's watchful gaze, Sirin slowly finished dressing. To be honest, being watched while getting dressed was really uncomfortable.

After getting dressed, Sirin tidied her slightly messy hair. Wearing clothes made her feel much safer, but Mebius's extremely penetrating gaze was not weakened much by the fact that Sirin was dressed.

After slipping her white-stockinged feet into the little shoes, Sirin glanced at the Herrscher of Thunder core that had lost its luster and was placed aside. She could sense that almost all the Honkai energy inside the Herrscher core had disappeared, with only a small amount of Honkai energy still maintaining its shape.

The fact that the Herrscher core wasn't broken means it can still connect to the imaginary space and use the power of the Herrscher of Thunder. After pondering for a moment while looking at the Herrscher core, a thought popped into Sirin's mind: if she used the Divine Key, would the effect be doubled? It seems she can use the power of the Third Herrscher now too.

But thinking about it, that's unlikely. At most, it would just increase the power of the Divine Key. Although Sirin doesn't know the situation with her Herrscher Core, the upper limit of power and the amount of Honkai energy in this Herrscher of Thunder core are already fixed. No matter what, it's impossible to break through its maximum power limit.

While Sirin was pondering, Mebius collected the Herrscher Core of the Herrscher of Thunder and put it into the small, square, transparent box, which was the same small box that originally contained the Herrscher Core.

After carefully placing the Herrscher Core, Mebius returned to Sirin's side and extended his hand to her.

"Let's go, Sirin, we're going to conduct the next experiment. This time, it's a practical test." As he said this, a mysterious smile crept onto Möbius's lips.

Seeing the mysterious smile on Mebius's face, Sirin was somewhat stunned. A practical test? Could it be that Alicia would fight her? Sirin felt a little confused. After thinking it over, the only one who could fight her in her Herrscher form was Alicia.

Sirin scratched her head and placed her small hand on Mebius's hand, hoping it wouldn't be Alicia. Now that her power had surged, her control was slightly lacking. If she accidentally hurt Alicia, she would be very sad and feel guilty.

Celine originally wanted to ask Mebius who her opponent in the practical test was, but seeing Mebius's mysterious demeanor, she figured he probably wouldn't tell her, so Celine gave up on the idea.

Holding Möbius's hand tightly, Sirin was led out of the laboratory by Möbius, who then locked the door behind her.

Möbius's hands were very soft, but Sirin could feel some thin calluses on them. Although there weren't many, they were still there. It was probably because Möbius often conducted experiments that these calluses formed.

Her fingers were long, slender, and soft, and seemed quite nimble. The feeling of being held tightly in Möbius's hand reminded Celine of her childhood, when they seemed to hold hands like this too. However, it had been a long time since they had held hands so tightly, and she felt a little nostalgic.

Thinking this, Xilin unconsciously tightened her grip.

"What's wrong?" After noticing Sirin's little movements, Möbius looked at her with some confusion.

“It’s nothing, I was just thinking about the past. It’s been a long time since we’ve held hands like this.” Celine shook her head slightly and smiled at Mebius.

“Before…” Mebius murmured. Her memories of the past were somewhat hazy, both good and bad, and had become ambiguous. But after Sirin’s words, Mebius remembered things from her childhood.

A moment later, Möbius's lips curled up slightly as he said to Sirin, "I remember you used to like to pester me, and you even said you wanted to marry me someday."

Upon hearing this, Xilin was taken aback. Soon, two blushes appeared on her cheeks, and she stammered, "This...this was just a childhood joke! Don't take it seriously..."

Seeing Celine's shy expression, Möbius couldn't help but laugh, laughing so hard he almost fell over. His little sister was truly adorable!

However... she doesn't want Xilin to marry anyone else. It would be best if she stayed single like this and didn't get snatched away by someone else. Xilin means a lot to her, and if she ran away with someone else, she would have nowhere to cry.

Celine was unaware of Möbius's thoughts, and her mind was in turmoil. Although marrying Möbius was something she often talked about when she was young, now that she thought about it, she didn't seem to be against it at all; in fact, she was somewhat eager to try.

What's wrong with her? Could she really want to marry Mébius? Even though... Mébius is beautiful and alluring, and no one wouldn't want to marry her, she's her sister! Even if they're not blood-related, it still... doesn't seem impossible...

Celine imagined herself and Möbius walking down the aisle in wedding dresses, and it felt perfectly natural; in fact, she felt a little excited.

Did she have feelings for Möbius? Celine didn't know; perhaps it was more lust at first sight. She didn't understand what her feelings for Möbius truly were.

In the end, Sirin sighed helplessly. Well, she'd just have to take it one step at a time. Sirin utterly despised the idea of ​​calling lust or love something simply based on attraction. Who knew what the future held? Who knew if she might actually harbor those feelings for Möbius? The road ahead was long.

As Celine thought this, Mebius's voice soon brought her back to reality.

"We've arrived."

At this moment, they were standing in front of an iron gate, which was a warehouse where Honkai Beast corpses were stored. Although the bodies of high-level Honkai Beasts were made of pure Honkai energy, and once they died, they were likely to turn into Honkai energy and dissipate in a short time, the Fire Moths had come up with a way to develop a technology to preserve the remains of Honkai Beasts in order to study them.

Isn't this supposed to be a real-world test? Why did Möbius bring her here? Sirin looked at Möbius with a puzzled expression.

Mebius smiled mysteriously and said to Sirin, "I know you're confused right now. I'll take you inside, and then you'll know what I'm going to do."

After speaking, Mebius took Sirin's hand and led her into the warehouse where the remains of Honkai Beasts were stored.

Chapter Fifty-One: This is the Hidden Plan!

Upon entering the warehouse, Sirin immediately noticed a highly concentrated Honkai energy source reaction ahead, which was continuously releasing Honkai energy. Although the Honkai energy inside was isolated, the high concentration of Honkai energy accumulation caused a slight increase in the concentration of Honkai energy outside.

This must be how the Fire Moth preserves the Honkai Beast corpses. Sirin wanted to carefully sense the situation inside. Although there was a barrier, she could still sense the situation inside through it if she carefully sensed it. However, at this moment, she heard Mebius's voice.

"Cirin, I need to put on my protective suit now. Wait for me here," Möbius told Sirin before leaving.

Looking at the spot where Möbius had left, Sirin stood obediently in place waiting for her, while also observing her surroundings.

Not long after, Mebius arrived wearing an incredibly heavy protective suit. She was completely covered up, and if Sirin hadn't recognized Mebius's voice, she would never have known it was her. The concentration of Honkai energy inside was frighteningly high, so it's no wonder Mebius was wearing a protective suit.

"Cirin, let's go inside."

"Um"

Mebius took Celine's hand, and the two walked through a corridor to an elevator, where they took it down to the ground.

The underground structure has three levels. They arrived at the last level, where the space was larger than the space on the ground. After passing through a nearly enclosed small room, Mebius led Sirin to their destination.

Before them lay the enormous corpse of a Honkai Beast. Sirin recognized it as Shesa's corpse. The Honkai energy content in the surrounding area was extremely high; a normal person without protective clothing would likely be overwhelmed by the Honkai energy within a short time.

But why did Mebius bring her to see Shesa's body? Sirin couldn't help but feel puzzled.

Seeing the puzzled look on Sirin's face, Möbius chuckled and said to Sirin, "Didn't you notice anything unusual?"

Something unusual? Upon hearing this, Sirin blinked and stared intently at Shesa's corpse in front of her.

She had assumed that Shesa's corpse in front of her was made up of small pieces of flesh, but to her surprise, it was a single body, not pieced together from small scraps of flesh.

And no matter how Celine looked at it, she couldn't see any signs of it being pieced together. What was going on? Celine was a little surprised. She clearly remembered that she had already turned Shesa into small pieces of meat.

Seeing the surprised expression on Sirin's face, Mebius, inside the protective suit, smiled slightly.