Use FGO to open the second dimension

Diarmuid's eyes flashed with shock as he turned his gaze to El-Melloi II in front of him.

"Could it be that the root cause of the world-destroying mutation has also appeared in my era?"

"That's right, that's why we've come to this era to make corrections. However, based on the history we know, Sir Kenneth is destined to die in the end. In this case, how could Sir Kenneth trust us if we reveal the truth? Don't you agree, Diarmuid..." Koizumi said slowly.

"How could this be..." Hearing that humans would eventually perish was shocking enough, but now he actually heard that his own Master would die in this Holy Grail War sooner or later. Diarmuid felt extremely uncomfortable. He pursed his lips and clenched his fists subconsciously.

"I'm sorry, we just want to end this matter satisfactorily. Lying is a helpless move."

Given Kenneth's arrogance, who knows what he would think when he knew the truth.

The only way to act would be to trick that guy away, that's what Koizumi thought.

I believe El-Melloi II thought the same, otherwise he would not have chosen to trick that guy Kenneth away.

Of course, El-Melloi II probably also didn't want his teacher to die here.

"No, Your Excellency has done his utmost. According to Your Excellency's wisdom, there should be a better way than this, but you still chose this gentle method. You even tricked my master away from this dangerous battlefield in order to save him. I am deeply grateful for this kindness. Please allow me to contribute my humble help to repay your kindness in saving my master!"

Diarmuid knelt on one knee before Koizumi, bowing his head in gratitude.

But before Diarmuid could kneel down, Koizumi helped him up.

"We are grateful that you can forgive our behavior, so there is no need to be so polite."

What's more, if you want to thank someone, you should thank El-Melloi II. It was him, not me, who came up with this plan. What's the point of thanking me?

This is also what El-Melloi II did to save his teacher. If it weren't for him, I probably wouldn't have done this. After all, such a gentle fighting style is not suitable for me.

"That's great! Now we have secured another servant!" Mashu said excitedly.

"Ensure the Servant? Speaking of which, have you all figured out the cause of the change, and found a solution?"

Diarmuid couldn't help but start asking, since he already knew the ending, it would of course be better to resolve the mutation quickly.

"I roughly understand. The anomaly is undoubtedly related to the Holy Grail War. Therefore, we are preparing to prevent this Holy Grail War. And as far as I know, if five of the seven Servants summoned, including you, leave the battlefield, the contaminated Greater Holy Grail will be activated. Therefore, we plan to protect the three Servants and make them leave safely, so that the Holy Grail cannot be formed."

This is El-Melloi II's strategy, and it's also the fighting style that Koizumi has always believed in.

And what El-Melloi II said was right. It was impossible for him and others to become enemies with seven Servants.

"Besides you, we've tentatively decided on Saber and Rider as the three candidates to secure."

Koizumi continued speaking after El-Melloi II's explanation.

"I see! Is this the reason you stopped me from dueling with Saber at the port last night?"

Diarmuid couldn't help but reveal a look of realization, and his suspicions towards Koizumi and the others gradually faded.

After all, what the other party did was consistent with their previous behavior, which means that they did not deceive themselves.

"But Saber, Miss Airi and the others are fine, but the negotiations with Mr. Rider are not going smoothly."

When this matter was mentioned, a look of distress appeared on Mashu's face.

"Can't we change to other guaranteed targets? In addition to Caster who was eliminated by us, there should be Archer, Assassin and Berserker to choose from." Diarmuid couldn't help but wonder.

"These guys all have some personality issues to some degree. Compared to them, these two are more normal. Although I don't think Rider is someone you can talk to with common sense either." Koizumi sighed slightly.

"Also, to ensure the safety of those we protect, we've decided to exclude those we don't protect, to prevent them from interfering with our plans. Of the remaining non-protected individuals, Archer and Assassin must be excluded. This means that only Berserker remains open to negotiation."

El-Melloi II turned his gaze towards Koizumi, a hint of deep meaning flickering in his eyes.

Diarmuid nodded, understanding the situation.

"So, the next step is to negotiate with Berserker."

Koizumi's eyes flickered with brilliance as he glanced at someone in the corner.

Ever since coming to this era, Chelsea's presence has seemed unusually weak, and the girl seemed to be happy with it.

I wonder if after returning to Chaldea, it will get used to its animal form and won't change back?

However, this was also a helpless move. Chelsea really didn't have much to do, so after coming to Kenneth's place for the first time, Koizumi let Chelsea move freely. After all, it was not a good idea to always bring a cat to the battlefield.

"As far as I know, Berserker's Master's real purpose in participating in the Fourth Holy Grail War was not to obtain the Holy Grail, but for other reasons. If we can make some efforts in this regard, we may be able to get his assistance. It's only because Berserker is irrational and difficult to control, and his Master is also a very dangerous guy both physically and mentally, that I have never mentioned this matter before." El-Melloi II paused for a moment.

"Besides, Berserker's Master has a deep obsession with Archer's Master. Even if negotiations ultimately fail, leveraging their power to join forces against Archer would be a good option. However, whether or not to do so is still up to you, Koizumi!"

After saying this, El-Melloi II turned his gaze towards Koizumi, a questioning look in his eyes.

Koizumi was silent for a moment, then turned his gaze to El-Melloi II and slowly asked.

"Is there any grudge between Berserker's Master and Archer's Master?"

"Yes, didn't you say that Berserker's Master had other purposes in participating in the Holy Grail War?"

Ritsuka couldn't help but ask.

"Well, this matter is still very complicated to explain."

As he spoke, a complicated look appeared on El-Melloi II's face.

"First, let me explain the identity of Master Berserker. His name is Matou Kariya, and he's one of the three original families that, along with the Tōsaka and Einzbern families, originally initiated the Holy Grail War. He's the younger brother of the current Matou head. However, due to his kind nature, despite being born into a family of magi, he resolutely renounced all ties with magic and has lived his life as an ordinary person. However, at this point in time, until a year ago, he was indeed just an ordinary person. But a year ago, something happened that changed him, and this was the beginning of his tragedy."

"And speaking of this, we have to mention his relationship with the Tousaka family. The wife of the current head of the Tousaka family, Tousaka Tokiomi, Tousaka Aoi, and Matou Kariya were childhood sweethearts. Matou Kariya had a crush on her since they were young. However, because he believed that he could make her happier than himself, Tousaka Tokiomi, he chose to withdraw. But even so, he and Tousaka Aoi still have a good relationship after marriage, and he often meets her and her two daughters with Tousaka Tokiomi in the park."

"Miss Rin, do you have a younger sister?" Mashu was surprised.

"Ah, her real name is Tousaka Sakura, and she's Tousaka Rin's one-year-old sister. She's also the source of this tragedy."

Speaking of Tousaka Sakura, even El-Melloi II couldn't help but reveal a complicated expression and sighed slightly.

"Original name? Doesn't that mean it's not Tousaka anymore?" Ritsuka keenly sensed something was wrong.

"Mage families have always had a single lineage, meaning only one person in each generation will inherit the family's legacy and continue the magic. Therefore, mage families generally choose the one with the most outstanding magical talent as their heir. However, both Tousaka Rin and her sister Tousaka Sakura possess extremely rare magical talent. This must have troubled Tousaka Tokiomi for a while."

"I can only choose one. But both daughters possess equally excellent magical talents."

"And it was at this time, a year ago, that the Matou family proposed adoption to the Tōsaka family, hoping that Tōsaka Tokiomi would adopt a daughter as an heir to his family. The continuation of a mage family is based on the continuation of magic, not the bloodline of the mage himself. As long as the magic seal can be passed down continuously, the mage family it represents can be considered to have been successfully continued. So there is no problem with this."

"The reason for this is that the current head of the Matou family had very low aptitude for magic and hadn't learned any. Furthermore, the more talented Matou Kariya had always been reluctant to take the helm, so the position of heir fell on him. Therefore, Tōsaka Tokiomi's troubles were resolved, and Tōsaka Sakura was naturally adopted into the Matou family, renamed Matou Sakura, and trained as the heir to the Matou family."

At this point, El-Melloi II paused for a moment. "However, Tōsaka Tokiomi probably doesn't know this. Although the Matou family appears to be a family that wields water magic, they are actually insect wielders in secret! This directly led to Tōsaka Sakura being subjected to inhumane and cruel abuse for a long time after being sent to the Matou family!"

Chapter 468: Chelsea's Presence Finally Emerges

At this point, El-Melloi II paused for a moment. "However, Tōsaka Tokiomi probably doesn't know this. Although the Matou family appears to be a family that wields water magic, they are actually insect wielders in secret! This directly led to Tōsaka Sakura being subjected to inhumane and cruel abuse for a long time after being sent to the Matou family!"

"How could this happen!?" Just hearing this, Mashu raised her hand to cover her mouth with a look of pity.

"Matou Kariya knew the darkness of the Matou family from a young age. That's why he always resisted magic and refused to become the heir of the Matou family. And the reason he changed his mind was because of Tousaka Sakura!"

El-Melloi II said slowly.

"I see. So, Matou Kariya also decided to participate in the Holy Grail War in order to protect Tōsaka Sakura?"

After hearing this, Koizumi roughly understood the other party's intention and turned his gaze to El-Melloi II.

El-Melloi II nodded slightly. "He decided to inherit the Matou family's magic and participate in the Holy Grail War in order to prevent his grandfather, Matou Zouken, from allowing the Crest Worms to continue to devour Tōsaka Sakura's flesh and blood."

"Marking worms!" Upon hearing about the matter of eating flesh and blood, Mashu's face turned pale.

"Those are insects controlled by the Matou family. They burrow into the bodies of magicians, devour their magic power and flesh, and perform inhumane transformations on them. They are truly evil!"

El-Melloi II couldn't stand this kind of behavior, but he knew that there were many such scum in the magic world. Although he couldn't stand it, he couldn't stop it. He could only prevent the tragedy in front of him.

"How could this happen! Miss Tohsaka Sakura she--" Mashu's face turned pale and she covered her mouth.

She could no longer imagine how much suffering Rin Tousaka's sister had endured in the Matou family.

Toosaka Rin is so small, not to mention Toosaka Sakura who is even smaller than Toosaka Rin.

Having to endure such pain at such a young age, Mashu could no longer imagine what Sakura Tohsaka's situation was like at this moment.

"Seniors, Koizumi-senpai—" Mashu couldn't help but look at her seniors Ritsuka and Koizumi.

Ritsuka was silent for a moment and turned his gaze to Koizumi. In this operation, most actions were decided by Koizumi. Even if she agreed, it would probably be difficult to rescue Sakura if she went to the Matou family.

After all, Koizumi has many tricks up his sleeve, and there's no way he can remove the crest worm from Sakura's body.

Koizumi frowned slightly. Even Koizumi himself felt unhappy when he heard that he was being so cruel to a child.

But in the current situation, even if I saved him, what would it matter? I still had to leave in the end.

But as I said before, what does it matter if it is a meaningless and futile action?

The most important thing is to be true to your own heart, otherwise how can you have the qualifications to be a human being?

After sighing deeply, Koizumi cast his gaze in a certain direction and spoke slowly.

"Chelsea, are you there? You've been offline for so long, it's time to come out and make your presence felt."

"Meow~~~" A series of cat meows came out slowly, and then jumped onto Koizumi's shoulder.

"Hey! This is the kitten Mr. Koizumi brought to this singularity! Is her name Chelsea?"

The cuteness of the kitten immediately touched Mashu's heart, and a blush appeared on her face.

"No! Mashu! Chaldea's reaction is—the other party is a Servant!"

Dr. Roman's eyes suddenly widened. From the time he brought her to the singularity until now, he had not sensed her breath. He only sensed it now. Was this also a breath shield?

"Eh!" Mashu and Ritsuka were immediately surprised, even Diarmuid was slightly surprised.

As for El-Melloi II, he looked at the kitten meaningfully. According to Zhuge Kongming's memory, there was indeed such an assassin who was good at transformation. The other party's real name should be - Chelsea!

Under a burst of light, a little kitten suddenly transformed into the figure of a curvy girl.

The girl hung on Koizumi's body, her enchanting posture making people feel strange.

"You don't have to play so big? Be careful not to overdo it. Don't regret it later..."

Koizumi's complaints echoed in Chelsea's ears, causing her cheeks to turn slightly red.

A certain part of Chelsea's bulge made Koizumi's heart itch, which was really a test of one's willpower.

With her cheeks slightly red, Chelsea snorted coldly and silently got off Koizumi's body.

But before coming down, he blew something into Koizumi's ear, which made Koizumi feel unhappy.

This is what they call having no place to vent... Koizumi couldn't help but sigh inwardly.

"Hello, everyone. I'm Chelsea, just an Assassin—"

Chelsea looked lively and greeted the others present.

"It is indeed Miss Chelsea. I have learned about your abilities from Mr. Zhuge Kongming's memories."

"So it's you, Mr. Military Advisor. However, this is probably the first time we meet. Please give me your guidance."

Mashu also nodded slightly, with a look of deep surprise on her face.

"Miss Chelsea, was that your Noble Phantasm? You can actually transform into a cat! How amazing!"

Ritsuka and Diarmuid also looked at Chelsea in surprise, with a hint of confusion in their eyes.

"Indeed, my Noble Phantasm [Transformation: Gaia Foundation] allows me to disguise myself as anyone, even an animal or a weapon. Although I don't have any combat abilities, it's enough to protect myself!"

Chelsea felt that there was no need to hide anything from the people in front of her, after all, they were all her own people.

"What a powerful Noble Phantasm! If it can disguise itself as anything, it's definitely Assassin's standard."

A look of surprise appeared on Lixiang's face, and there was a hint of admiration in the surprise.

This is simply Assassin's standard configuration. The mere fact that he can pretend to be anyone is enough to make people let down their guard, and then it will be very easy to give the other party a fatal blow.

Even though it is very difficult to fight against Heroic Spirits, if you plot against the Master secretly, you can almost win every battle.

As long as the Master is killed, the Heroic Spirit will eventually leave the stage.

So if Chelsea were to appear in the Holy Grail War, it would be much more terrifying.

"Indeed, an Assassin like this is truly unstoppable in the Holy Grail War."

Mashu couldn't help but say this, and even Diarmuid nodded in agreement.

They didn't feel anything about the cat just now, but now after hearing this, they couldn't help but become alert subconsciously.

After all, this kind of servant is good at taking advantage of others' carelessness and killing their enemies.

Chapter 469 Chelsea's Infiltration

"Chelsea, excuse me. We're going to talk to Berserker's Master. You go and try to find Sakura Matou at the Matou residence. If you can, bring her out. If possible, burn the Matou residence down as well. Diarmuid, you come with us. The Matou family is a famous family of magecraft after all. Although they've fallen, Chelsea probably can't break the barrier there. Your Noble Phantasm might come in handy."

After a moment's silence, Koizumi sent Chelsea and Diarmuid to deal with the Matou family's problems.