I am Möbius's sister.

"Of course I could not forget, after all, this was also one of the experiments. Removing the Herrscher core from a Herrscher's body in a peaceful and harmless way is something that no one has done before. Usually, it is removed by force."

"So, my sister is the first one?"

“Well, being the first has its downsides. I don’t really want it to be like this. After all, it’s something that’s never happened before, and even if I’m very capable, there’s still a significant risk.” As he spoke, Mebius glanced at Ekaterina beside him.

"I can't guarantee that she won't have any problems after the surgery, but of course, it would be best if she didn't have any problems."

After listening to Möbius's words, Sirin thought for a while, and then turned her gaze to Ekaterina beside her.

After a moment's thought, Sirin asked Ekaterina, "Can you accept this risk?"

"Eh... Eh? Me?" Upon hearing this, Ekaterina was somewhat surprised, then nodded. "I don't think this risk is anything. I trust Sister Sirin and I also trust Sister Möbius...?"

Möbius nodded slightly and said, "In that case, let's begin the surgery shortly." As he spoke, Möbius released Sirin and turned to begin preparations.

At this moment, Isha, who had been ignored, finally couldn't hold back anymore and shouted, "Hey! Don't ignore me! Weren't you going to let me do the experiment? Why aren't you here yet!"

Upon hearing this voice, Mebius looked towards Isa with a slight smile on his face.

"So you really want me to do your experiments, little guinea pig? But unfortunately, I have more important things to do, so I'll let you go today."

"Eh...? Let me go?" Upon hearing this, Isa's eyes widened, and she felt a little complicated. She had clearly prepared herself.

Seeing Isa's dejected look, Mebius couldn't help but feel a surge of excitement. Could this be the legendary "placement" technique? Perhaps he could use it when playing with Sirin.

After thinking about it, Mebius stepped forward and removed all the clips from Isa's body.

He then left her alone and went to do the pre-operative preparations for the surgery.

Chapter 165

Watching Mebius bustling around, Isa pouted in anger. What was this all about?! She was called over, but Mebius did absolutely nothing! Was she being treated like a monkey? This inferior life form!

Although Isa was getting angrier the more she thought about it, she didn't dare to show the slightest displeasure. After all, Sirin was watching, and if Sirin saw that she had any dissatisfaction... well, it wouldn't really matter, but she just didn't dare to express it.

After a period of preparation, the surgery began, and Sirin joined the operation. Her main responsibility was to stabilize the Herrscher core within Yekaterina's body. If this thing went out of control, not only this laboratory, but the land within a radius of a thousand meters would be contaminated by a massive amount of Honkai energy, and all living beings except Sirin and Isa would die.

The surgery was incredibly tense, and no one dared to slack off. However, compared to Sirin's tension, Mebius seemed much more relaxed, and one could even see a hint of excitement in her eyes. This was the first time she had operated on a living Herrscher, and the value of this surgery was definitely very high.

The surgery was proceeding smoothly, but Mebius's brow furrowed even deeper.

At this moment, she encountered a very difficult problem. The surgery had reached the final and most crucial step: removing the incompletely formed Herrscher core. However, if the Herrscher core was removed, Yekaterina's life would be difficult to sustain. But if it was not removed, Honkai energy would continue to erode Yekaterina's body.

Until she becomes a fully-fledged Herrscher or dies.

Sirin had told her about this before, so she had prepared corresponding measures, such as precious anti-Honkai energy serum and a series of life support devices, but after the actual surgery, she found that these things did not help Ekaterina at all.

Her body had long been riddled with holes by Honkai energy. While Honkai energy was destroying her body, it was also maintaining her life. Honkai energy serum could not restore her health, and the life support device could not sustain the girl's life.

All that can be done now is to try to suppress the Honkai energy within the Herrscher core from eroding Ekaterina. Simply put, Ekaterina is beyond saving.

After thinking for a while, Möbius decided to tell Sirin about Ekaterina's current situation.

After hearing Mebius's explanation, Sirin fell silent. She looked at Ekaterina, who was now asleep due to anesthesia, and felt an indescribable sadness in her heart.

"Is there really no other way?" Sirin asked, still unwilling to give up.

The answer she received was a shake of the head from Mebius: "There's no way, unless her body can become healthy instantly."

Upon hearing Mebius's verdict, Sirin's face drained of color. After a long silence, she sighed. If even Mebius says so, then there really is no hope...?

After a moment's thought, Sirin instantly recovered her health... This was indeed something beyond the comprehension of ordinary people. Since human power could not achieve it, then she would seek power beyond human capabilities! She remembered that she had previously drawn a reward called the Holy Grail from the system.

The Holy Grail's effect is to heal all injuries; hopefully, this extraordinary power can help Ekaterina.

As for how to explain the origin of the Holy Grail after taking it out, Sirin hadn't thought that far ahead. The situation was urgent, and there was no time for hesitation. She had to save Ekaterina; that was her promise.

When Sirin summoned the Holy Grail, its golden light instantly drew Möbius's attention.

“This is…” She pointed to the Holy Grail in Sirin’s hand, her expression a mixture of confusion and curiosity.

“This is the Holy Grail. The water inside can heal all injuries. I want to try whether this thing can allow Ekaterina’s body to reach a point where she can still live without the Herrscher core.” Sirin carefully held the Holy Grail, not letting a single drop of water spill.

Chapter 166 Taking a Bath at Night

“The Holy Grail…” Möbius stared intently at the Holy Grail in Sirin’s hand, a strong curiosity and desire to study it surging in his eyes.

The claim that it could heal all injuries sounded far-fetched, since "all" is such an absolute statement. But Mebius knew that Sirin wouldn't lie at a time like this, so even if it couldn't heal all injuries as Sirin claimed, it must still possess strong healing properties.

Driven by a desire to find out more, Möbius watched intently as Sirin carefully poured the water from the Holy Grail into Catherine's mouth.

Although Ekaterina was asleep and unable to swallow, she still managed to swallow the water from the Holy Grail smoothly thanks to the Honkai energy released by Sirin.

Then something that surprised Möbius happened: the incision on Ekaterina's body caused by the surgery was slowly healing, gradually closing up from both sides of the wound.

At the same time, Mebius also noticed that the data on the instrument monitoring the Herrscher core inside Ekaterina's body had begun to fluctuate violently, as if it were struggling against something, fluctuating very violently, sometimes high and sometimes low.

This further piqued Mebius's interest in the Holy Grail in Sirin's hand. Undoubtedly, the water in that Holy Grail contained a mysterious energy that could rival Honkai energy. According to the data on it, the Honkai energy concentration in the Herrscher core was constantly declining, and although the fluctuations were dramatic, it was gradually weakening.

She couldn't help but be curious about the mysterious energy that could counteract Honkai energy. She really wanted to get her hands on the Holy Grail to do some experiments, but that could wait. Right now, she was more curious about how Sirin had obtained it.

After feeding Catherine the water from the Holy Grail, Sirin checked Catherine's body again and breathed a sigh of relief upon discovering that the Holy Grail was indeed effective.

At this moment, Catherine's body was completely different from what it had been not long ago. Now, Catherine's complexion was rosy and full of vitality, as if her previous pale and paper-like appearance was a lie.

"Sister, shouldn't we be able to continue the surgery now?" Sirin looked at Mebius with a hint of excitement.

“It’s ready.” Mebius nodded. Yekaterina’s body was in excellent health. All her internal injuries had been cleared away in an instant. At most, she was just not in good spirits. Moreover, her Herrscher core was temporarily suppressed by the water. It could be said that there was no better time to perform the surgery.

"Then, sister, I'm entrusting Ekaterina to you." Sirin held the Holy Grail and stepped aside.

"Well, leave it to your sister, but don't rush off yet. I have some questions for you later." Möbius nodded slightly and then went to the operating table.

Hearing Möbius's meaningful words, Sirin's heart skipped a beat, but she quickly calmed down and responded softly. When she took out the Holy Grail, she was prepared to be questioned by Möbius and had already thought of a way to deal with it. Now, the most important thing was to stay calm.

Sirin stood aside, watching Möbius perform surgery on Ekaterina. Time slowly passed, and several hours quickly went by. During this time, Sirin either wiped Möbius's sweat or stood by, watching the surgery with a tense expression.

When the surgery was successfully completed and the Herrscher Core was removed from Ekaterina's body by Mebius and handed over to Sirin for safekeeping, Sirin finally felt relieved.

"Alright, Sirin, give Ekaterina some more of the water from that thing called the Holy Grail." Taking the towel Sirin handed him, Möbius wiped the sweat from his forehead.

“Ah…” Sirin froze, and said with some helplessness, “This thing can only be used once and you have to wait a week before you can use it again.”

"Hmm? You fed all the water in that Holy Grail to Ekaterina? Couldn't you have divided the water into several portions?" Möbius frowned. If that was the case, then the research period for her to study this thing in the future would probably be quite long.

"Huh? Is that even possible?" Upon hearing Mebius's words, Sirin couldn't help but show a look of surprise. To be honest, she had never thought of using it this way and had directly poured all the water into Ekaterina's stomach.

Seeing Sirin's appearance, Möbius knew without a doubt that Sirin had just fed all the water to Ekaterina. What a silly girl! It seems that this thing can only be studied again in seven days.

Mebius smiled helplessly and reached out to gently rub Sirin's head.

Xilin instinctively rubbed against him.

She really looks like a kitten… Möbius couldn’t help but think of Sirin wearing cat ears and a cat tail.

“Sister…Sister.” Sirin looked at Mebius in front of her, not knowing why Mebius suddenly touched her head, although she didn’t have any objection.

"Cirin, could you... meow for me?"

"Meow?" Sirin tilted her head in confusion. She found it hard to understand what Möbius meant, but trusting him, she did as he said.

"Is that so... Meow~" Sirin held the Holy Grail in her left hand, bent down slightly, and placed her right fist next to her cheek, meowing.

Looking at Sirin's adorable appearance, if it weren't for the fact that there was still a sleeping Ekaterina on the operating table, Mebius would have almost been unable to resist hugging the little one and giving her a good cuddling session. However, she wasn't in a hurry; she would have plenty of time when she got home, and she could play even more creatively with her.

To calm himself down, and unable to resist taking advantage of the adorable little one on the spot, Möbius coughed lightly and changed the subject: "Ahem... um... let's get Ekaterina out of here quickly. Since we can't cure her immediately, we can only proceed according to the normal procedure."

"Ah, um." Xilin paused for a moment, then nodded.

"As for Ekaterina's Herrscher core, you can keep it safe, Sirin. See if you can extract authority from this unformed Herrscher core."

"Hmm, I'll give it a try." Hearing Mebius say this, Sirin was also eager to try. If she could really obtain power from it, it would definitely greatly improve her strength.

"There's one more thing."

"Ok?"

"After you get home tonight, take a shower, change into the catgirl maid outfit you were wearing earlier, and wait for me."

"Huh?" Upon hearing this, Xilin's face flushed red instantly, and she nodded shyly.

Seeing Sirin's extremely shy appearance, Möbius understood that Sirin had misunderstood something. In fact, she just wanted to pet the catgirl. She didn't want to have sex with the cat today. Well... if the catgirl took the initiative, she wouldn't refuse.

Having thought this through, Mebius did not expose the misunderstanding, but instead kept it.

Chapter 167 The Storm Is Coming, Investigation

After settling Ekaterina in, Sirin didn't go home immediately. Instead, she went to the training room to try and obtain the Herrscher powers from the unformed Herrscher core, only to find that it was impossible.

She later asked the system and learned that before the Herrscher Core was formed, the link between the Herrscher Core and the Imaginary Space was not stable, so it was impossible to obtain the powers within.

This made Sirin a little disappointed, but she didn't care too much. She was just trying it out anyway. If she succeeded, she would make a huge profit, and if she didn't succeed, she wouldn't lose anything. Since she couldn't obtain power from this thing, she could use it as bait to get a large Honkai energy bomb. Either way, she wouldn't lose anything.

After finishing these things, Xilin went to visit Xier again. Xier was currently troubled by the matter of Hei Xi. Recently, Hei Xi had been acting strangely. Sometimes, no matter how Xier called her, she would not come out and would hide in the depths of her consciousness, doing something unknown. This situation made Xier very uneasy, thinking that she had unintentionally upset Hei Xi.

After comforting Seele and telling her not to overthink it, Sirin returned home, not forgetting to bring her maid, Isa, with her.

Back home, Sirin obediently followed Mébius's instructions, took a bath, changed into her cat-eared maid outfit, and lay on the bed waiting for her. Sirin even bought some finger cots specifically for this purpose, just waiting for Mébius to come home.

However, Mebius, who didn't want to be a cat, naturally wouldn't do anything particularly lewd to Sirin. After returning home, Mebius only kissed and hugged Sirin, which made Sirin a little angry.

I'm all ready, why aren't you going? That's pretty much the feeling.

So, through Celine's efforts, she successfully transformed from a cat into a goldfish that could spray water.

Their daily life afterward was ordinary yet warm, and sometimes quite unique.

After all this time, the time for the fourth Honkai outbreak is very close.

Sirin managed to keep the secret about the system. Although Möbius kept asking about the Holy Grail, Sirin always brushed him off by saying that it was fished out of the Sea of ​​Quanta. Even though Möbius keenly sensed that Sirin was hiding something, she couldn't get any answers from her.

After asking several more times, Mebius stopped asking Sirin. With Sirin's help, the experiment on the Fusion Warrior project was progressing rapidly, and the research on imaginary space was also making some progress.

What Sirin didn't expect was that Mebius and Mei had actually reverse-engineered the technology of the Stigmata from Seele's body. Although the reverse-engineering was not yet complete, it was already a very surprising thing. They were truly geniuses.

Kaiwen was even more outrageous. After joining the Fire Moth and officially starting training, she surpassed Alicia in simulated training within a few months, turning Alicia, the perennial leader, into the second-best. Thus, these two geniuses began to frantically compete for points, taking turns to be number one, and almost every training session saw them break records.

During this time, Sirin did not forget to hand over the chat room bracelets to the heroes. After all, there was a reward for completing this task. Even with Mebius, she found an opportunity to give her the bracelet without revealing herself as much as possible.

Su found her through Kaiwen; yes, Su in this world is also a girl, just like Kaiwen.

We haven't dealt with Aponia, Padofelis, or Sirin from Kosmo yet, but we got to know Gretchen through Möbius's connections.