Chen Yu was quite supportive of Nyarlathotep's request.

If Nyarlathotep ate all the black mud inside the greater grail, would his main mission be considered complete?

This way, neither the Fuyuki Great Fire incident would occur, nor would other Magi touch the Root.

The greater grail was like an extra-large, delicious chocolate cup, tempting Nyarlathotep to tear open its packaging.

Nyarlathotep, full of confidence, adjusted the Holy Grail formation, preparing to tear a small opening on the outer perimeter of the greater grail to sample the 'deliciousness' within.

Perhaps it was her first time, with only theoretical knowledge and no practical experience; under Nyarlathotep's micro-management, she not only failed to poke a small hole in the Holy Grail system but also deleted the backdoor that the bugs had left in the system.

This was like a programmer on their first job, confidently believing they had mastered C+ and C++ languages, going to modify the company's legacy spaghetti code, only to find the entire system locked up after just one code change.

She was a bit afraid to move recklessly now.

When Nyarlathotep confidently deleted a few seemingly useless runes in the magic circle, she successfully removed the Holy Grail system's backdoor and welded it shut.

Now, apart from brute-force cracking, the greater grail can only automatically open its Holy Grail hole after at least five Servants' souls are collected into the lesser grail, according to the previous program; otherwise, brute-force cracking is the only option.

However, if brute-force cracking is chosen, it could easily trigger a leyline riot, leading to the Fuyuki Great Explosion.

It would be like popping popcorn with an old-fashioned popcorn machine; one wrong move and there would be a 'BOOM!' sound, scattering the black mud from the greater grail everywhere, with an explosion powerful enough to level half of Fuyuki City.

Although brute-force cracking is simple and crude, the cost would be that the greater grail's overflowing black mud would likely be evaporated by more than half in the explosion.

It would be like opening a vigorously shaken bottle of cola, leaving only a little soda at the bottom, not even enough for Nyarlathotep to take two satisfying sips.

"Darling, Darling, how about we go meet that guy who's recklessly radiating his aura in the city and see if we can take him down? Can we? Can we? Can we, Darling?"

As soon as they emerged from the Great Cavern, Nyarlathotep eagerly pointed towards the direction in the city where a Servant's aura was continuously emanating, asking Chen Yu.

Servants can sense the aura of another Servant, but only if the other party is not actively concealing their aura.

While Caster's scouting ability isn't the best, since the opponent was uninhibitedly radiating Servant information, she could naturally easily detect their presence.

Radiating a Servant's aura so brazenly was like openly setting up a challenge arena, inviting other Servants to a fight.

Seeing Nyarlathotep so eager to join the battle, Chen Yu did not immediately nod. Instead, he took out the Iron Man mini-version helmet that Tony had given him from his backpack. After putting on the helmet, he used the computer operating system inside the mask to connect with the familiars he had summoned and then released.

At this moment, several small birds were resting near the Coastal Park. Under Chen Yu's command, those birds perched on the trees set off towards the Warehouse District.

The Warehouse District is located east of the Coastal Park, and it is almost deserted at night.

Dim lights illuminated the entire Warehouse District, with unmanned cranes and containers neatly arranged along the coast.

Through the miniature camera, Chen Yu could clearly see Lancer leaning idly against a container, waiting for an opponent's response.

As expected, Lancer was still the first to instigate conflict.

It seemed Diarmuid Ua Duibhne was following the orders of his Master, Kenneth El-Melloi, preparing to confront other Servants near the Warehouse District in the northern bay of Shinto.

"Nyarlathotep, the Servant currently radiating an aura in North Port is a Lancer, his true name is Diarmuid Ua Duibhne, a famous hero from Celtic mythology and the most popular knight of the Fianna Knights. According to legend, he possesses unparalleled martial arts."

"Nyarlathotep, you need to pay attention to his two brushes... no, I misspoke, his two spears. Both of these spears are noble phantasms, named Gáe Bolg and Moralltach. Gáe Bolg is a red long spear that has the effect of nullifying defenses made of magical energy, while Moralltach is a yellow short spear that carries the 'unhealable wound' curse. Being wounded by this short spear will cause irreversible damage."

"Furthermore, Lancer possesses B-rank Magic Resistance and A+ Agility. Nyarlathotep, are you sure you want to choose him as your target?"

Chen Yu glanced at Nyarlathotep's stats, where her Strength was equal to Lancer's, only her Agility was slightly inferior. He felt that Nyarlathotep choosing Lancer as a target was not an unacceptable decision.

"Hmph hmph hmph, mere A+ Agility, Nyarlathotep is naturally fearless!"

Nyarlathotep put her hands on her hips, declaring her fearlessness of Lancer, then curiously stared at the mask on Chen Yu's head, tapping it, making a "clang clang" sound.

"Darling, this thing seems to be made of iron, it looks strange."

Indeed, just wearing a helmet does feel a bit mismatched.

But putting on the entire Iron Man Armor, the feeling would be different.

Chen Yu took out the other Iron Suit parts and, with the aid of a spell, put them on.

Wearing the Iron Suit, he wouldn't fear Kiritsugu Emiya, who might be hiding in the shadows, taking potshots.

If Kiritsugu Emiya dared to take a potshot at him tonight, he would return the favor with a rocket.

Let him know what reciprocity is.

After he finished putting it on, Nyarlathotep's eyes lit up again, and she became interested in the Iron Man Armor on his body.

"Darling, Darling, this looks so fun! Can Nyarlathotep try it on sometime?"

Before Nyarlathotep finished speaking, she began to touch Chen Yu all over, tapping here, looking there, stroking the metal armor, and exclaiming "Oh my!"

Chen Yu, watching Nyarlathotep's hands all over him, helplessly grabbed her curious little hand and said, "This is a metal armor given by a friend, custom-made. You can't fit into it at all."

Hearing the words 'you can't fit into it,' Nyarlathotep seemed a bit disappointed, but quickly perked up and said to Chen Yu, "Then can't you ask your friend to make one for Nyarlathotep too? Nyarlathotep will exchange good things for it!"

"Let's talk about it when we meet again. I'll help you ask... Now, let's hurry up!"

Seeing Chen Yu agree to help her ask, Nyarlathotep excitedly pulled Chen Yu's arm: "Darling is the best! Let's go now!"

Looking at Nyarlathotep clinging to him, Chen Yu could only activate the Iron Man Armor's auxiliary flight system, and energy sprayed from his feet as he flew into the sky.

Night fell, and the streets were cloaked in another hue by the darkness.

Ryudoji Temple is in the far west of Fuyuki City, while Shinto is at the eastern end of Fuyuki City. If he wanted to engage in battle, Chen Yu needed to travel from one end of the city to the other.

As soon as Chen Yu and Nyarlathotep left Miyama Town, they felt two intense magical energy fluctuations coming from North Port.

Through the blue monitoring window floating at the edge of his vision, he saw two familiar figures had already begun fighting.

He hadn't expected that after only a few minutes' delay, Lancer and Saber had already started fighting.

"Nyarlathotep, a Servant has already gotten a head start. Do you think we should continue on our way, or choose to observe from the side?"

Nyarlathotep released her small hand from Chen Yu's arm, floated in mid-air, thought for a moment, and chose to observe.

Through the otherworldly bee swarm in the Mirror Dimension, she also saw the battle between Lancer and Saber, and she also saw Saber's Master not far behind them.

At this moment, Lancer and Saber were engaged in an evenly matched battle. If she and Darling rashly intervened, it was not out of the question that both sides might unite against them.

If they waited until both Lancer and Saber were mutually wounded, she and Darling could easily reap the benefits.

Considering this, Nyarlathotep pointed to a building not far ahead and said, "Darling, should we go there? That place looks like a great viewing platform!"

Chen Yu followed Nyarlathotep's finger; the place she pointed to was Fuyuki Bridge.

Fuyuki Bridge is a magnificent arched bridge, six hundred and sixty-five meters long.

The arch is at least fifty meters high, and standing on it, one can indeed overlook most of Fuyuki City. It is indeed a good place to observe the battle.

Chen Yu and Nyarlathotep landed on the top of the bridge, the strong sea wind making the bridge arch sway slightly.

As soon as the two stabilized themselves, they heard a "thump," and a towering figure clad in a red cape also landed on the top of the other side of the bridge.

It seemed both sides thought Fuyuki Bridge was a good vantage point.

As soon as the towering red-haired man put down the trembling, slender figure in his hand, he heard the small, black figure let out an embarrassing moan: "Rider... it's too dangerous here... let's go down quickly... quickly..."

A fifty-meter high bridge arch, if an ordinary person stood on it, they would surely be blown into the river by the strong sea wind.

Even skilled workers who frequently worked on the bridge would not dare to go up without a safety rope.

But Waver Velvet had no safety measures at all at this moment. After Rider put him down on the swaying bridge arch, his legs immediately gave way and he collapsed, terrified of being blown off by the wind or shaken down by the bridge arch.

At a height of fifty meters, falling into the river would be one thing, but if he fell onto the bridge, Waver would become 'Waver-chan' (a mess).

Due to the cold and fear, Waver's voice trembled slightly. He was so preoccupied with watching the vehicles passing below the bridge that he didn't notice the figures on the opposite side of the bridge.

If no one else were here, Iskandar wouldn't care about his Master's performance, but with two figures standing on the opposite bridge arch, he naturally didn't want his Master to embarrass himself in front of others.

"Master, be brave. This place is perfect for keeping watch. Don't you agree, my friends across the way?"

Iskandar took a bottle of red wine from under his cape and gestured towards the opposite side.

He hadn't expected anyone else to also fancy this spot.

Nyarlathotep saw Iskandar, leaned her head close to Chen Yu, and whispered, "Darling, another Servant has arrived. What should we do?"

"Let's wait and see. His class is Rider, his true name is Iskandar, known as the 'Conqueror King.' He has three noble phantasms, the strongest of which is 'Army of the King.' If a fight breaks out, watch out for his charge."

Chen Yu spoke concisely, relaying all the information he knew about Rider through a whispered transmission.

As soon as Chen Yu finished speaking, Waver on the other side once again let out an embarrassing sound: "Falling... falling down! No, let me down! I... I... I can't take it!"

Waver hadn't paid attention to Rider's words. At this moment, he only wanted to return to the ground, still wailing and screaming to himself.

To prevent his Master from further embarrassing himself, Iskandar easily pulled Waver up with one hand, turning his face to Chen Yu and Nyarlathotep.

"Master, there are other people on this bridge. Don't make cowardly sounds in front of the enemy."

Then Iskandar asked Waver, "Can you tell who is the Servant among them?"

When Iskandar asked, Waver, with trembling legs, stared at Chen Yu and Nyarlathotep for a while, then finally shook his head blankly: "...Cannot determine, absolutely cannot determine."

Hearing Waver's reply, Iskandar raised an eyebrow and said, "What? Didn't you claim to be the most amazing Master? How can you not even tell who the Servant is among them?"

Choosing Fuyuki Bridge as a lookout point at night, and both individuals possessing magical energy—one a white-haired, purple-eyed girl, the other a dwarf in metal armor—neither looked like ordinary people.

So Iskandar needed his Master's help to confirm who was the Master and who was the Servant, so he could plan accordingly if a battle broke out later.

But he hadn't expected his Master to discern nothing at all. Every Master who made a contract with a Heroic Spirit was granted clairvoyance to see other Servants' ability values, yet he couldn't tell who the Servant was on the other side. This was truly absurd.

"If I can't tell, I can't tell! They must have some spell hindering observation, which is why I can't tell who the Servant is at all!"

Hearing Waver's pathetic excuse, Iskandar frowned, gazing at Chen Yu and Nyarlathotep.

The combatants currently fighting in the Warehouse District were Lancer and Saber.

Last night's battle suggested Assassin had been eliminated, and he himself was Rider.

And judging by their quiet conversation just now, they didn't seem like the berserk Berserker.

Excluding Saber, Lancer, Assassin, and Rider.

There were only two options left: Archer and Caster.

If he could confirm the class of that golden-glowing individual from yesterday, he could determine the true class of the Servant before him.

But neither Archer nor Caster were good at close combat.

At such close range, if he suddenly summoned Gordius Wheel and charged, the opponent wouldn't even have time to react. The advantage was his!

Iskandar thought confidently.