Lancelot was a little reluctant to swear to such boring things in the name of King Arthur, but he couldn't stand Duke's urging at the side, so he had to admit it.

After making the oath, Lancelot felt a little uneasy: "Beerker, I'm a little worried, and I always feel that something unfortunate will happen."

Duke shook his head repeatedly: "No, you're thinking too much."

"I hope so, but I still feel something is wrong..." Lancelot frowned deeply, his expression even more melancholy.

"Okay, the enemy is here, get the caster done first and think about something else!"

"That's right." Lancelot agreed deeply and suppressed the uneasiness in his heart.

The two of them walked along the way, and under Duke's leadership, they soon arrived at the underground drainage exit of Touki City. If nothing unexpected happens, the caster and his emperor, Yuzuki Ryunosuke, would be hidden inside.

"beerker, be careful, caster's rank skill is 'position building', and excellent magicians can even build irrefutable temple-level defenses." Lancelot quickly got into the role and played the role of the Lord with three points.

This is not surprising. Although he is the best among the Knights of the Round Table and has good character, it is not difficult to find that he has many tasks that lurk in the enemy. In this Holy Grail Battle, Duke can beat him in terms of acting skills.

"It's okay, I'm also a magician. I can feel that caster's level is very time-honored. Creating a magic workshop should be his limit." Regarding the former French marshal, in addition to the big eyes that have mutated after peeping into the abyss, the most impressive thing is the deep-sea water demon he summoned, the tentacle monster with suction cups and fluff tentacles.

This is a supporting role with a very high guest appearance rate in the magic crew, and sometimes appears as the main villain. There is an enviable rivalry between him and the heroine!

The two of them entered the underground drainage system of Dongmu City through the drainage port. The terrain inside was very complex, with waterways crisscrossing and dense like spider webs. Fortunately, the drainage system was built to avoid being attacked by typhoons and rainfall disasters. There was no black water flowing garbage, nor any rotten objects that were stinking.

The reinforced concrete structure penetrates dozens of meters underground, covering most of the Dongmu city. Walking inside, it feels like being in an underground temple, making people feel a sense of insignificance.

Such a huge underground palace, the caster's ability cannot be fully covered. The water demon he summoned was near the nest, and other areas only had simple magic traps to guard against invasion.

As he walked, Duke noticed a faint magic power in the air. He followed the magic trap and quickly arrived at the edge of the caster's nest. What caught his eye was the dense water demon waving his tentacles. The soft creature had no bones all over his body, and the surface was covered with a layer of sticky liquid, which made people feel chilled.

Duke sat on the horse's back, and a huge magic burst out from his body, spreading out along the crisscrossing waterways, feeding back the surrounding information like a radar.

Suddenly, Duke opened his eyes suddenly: "Xiaolan, rush over, I found the caster!"

Almost at the same time, the caster also noticed that he was locked by magic. While shouting, "Ryunosuke runs quickly, the white-bearded mage is here," he ordered the water demon to attack and cover the two of them to run away.

caster watched the battle in the port area with a crystal ball last night. 90% of his attention was focused on Joan of Arc, whose chest was shrinking, and the remaining 10% saw Duke and Arher's shocking operation. He knew that he had no chance of winning against Duke.

As for why Saber is mistaken for Joan of Arc, it may be that the caster thinks that women are fickle creatures, and they have a new look every day, and there is nothing wrong with being bigger or smaller.

Looking at the water demon that was constantly attacking, Lancelot blocked Duke, pulled out a long sword on the ventral side of the Nightmare War Horse, giving it the tenacity and sharpness of the treasure, and calmly slashed it.

Lancelot didn't even wear armor, and maintained a rapid offensive. The breath and frequency of the sword swing were consistent. The water demons rushed up in vain and turned into fragmented corpses at a constant speed.

The sharp sword net cast a curtain of death, and groups of water demons slapped over like waves, but they could never get close to Lancelot, let alone Duke behind Lancelot.

"beerker, there are a lot of enemies. Please move back and give me some time." Lancelot said in a calm tone, wielding the sword in his hand was not airtight, and even a drop of blood did not splash at the foot of the war horse.

Lancelot was confident that he could completely resist the tide attack of the water demon, but the number was too large. It was time-consuming to kill all without using the treasures. He realized that the water demon had the ability to heal himself, and his torso was constantly growing new tentacles, which was quite disgusting.

Most importantly, if these dirty blood stained the monarch's shoes, it would be his shame as a knight!

"Xiaolan, these are just cannon fodder summoned by caster, and the purpose is to consume our physical strength."

"So that's it. I'll use these monsters to consume my physical strength first, and then catch us all in one go. Caster is not a foolish person." Lancelot praised.

"No, the caster didn't think of catching us all in one place. He and his master had already begun to escape." Duke knew with his eyes closed.

"Escape! Why do you want to escape?" Lancelot was puzzled: "Although these mobs are vulnerable, they are invincible, but they are in large numbers. The current form is that they have the advantage!"

Duke groped his chin and said seriously: "Maybe he was scared out of his courage when he saw Xiaolan."

"Thank you for your praise. Lancelot is worthy of it." Lancelot felt his blood surge and his gloomy face looked much better.

"Xiaolan, hurry up and resolve the battle, let's chase after you."

"Okay, I'll use the treasure!" Lancelot waved his strength, and the long sword rolled up the manic wind blade, clearing out a large open space in the crowded front.

"No, now you are the master of the emperor, don't be exposed easily, let me, as a servant, open the way!"

Hearing Duke's words, Lancelot subconsciously wanted to advise, and suddenly a magic power that made him palpitations dissipate, and then the cold cold that was frozen in his heart jumped over him. I saw a cold ice blue light flashing, and endless frost was sprinkled along the way, and the ground freezes, and the water in the air divided into ice particles and fell down. All the water demons that kept pouring in turned into ice sculptures.

In the blink of an eye, the underground temple turned into an ice-blue ice and snow castle!

"This is..." Lancelot was shocked. He had known that his master had outstanding talents as a magician, but now he realized that he was still underestimating the other party. Duke was far stronger than he thought.

"Ah, Xiaolan, I consume too much magic power, I'll leave it to you next." Duke looked too blue and weak, and his body was hollowed out. He took out a tube of deliciousness from his arms... Cough cough, a tube of magic potion, and his face looked much better after drinking it.

Lancelot was shocked and even forgot about hiding his identity: "Master, you don't have to do this. If I use treasures, it will be easy to destroy them."

Duke breathed weakly, waved his hand and said, "No, there is no need to expose Xiaolan for some small characters. The iron in the Battle of the Holy Grail is to hide the identity of the servant. You cannot use the treasure easily until the last moment."

Lancelot was extremely moved when he heard this and knelt on one knee in front of the war horse: "As a follower, I actually made you so exhausted. It's all my fault for being incompetent."

"Xiaolan, you said it wrong again. I trust your strength very much. Compared with other servants, you are the best one!" Duke said with a serene comment.

"Master, Lancelot will definitely take the Holy Grail for you..." Lancelot's throat trembled a little. This feeling of being deeply believed by the monarch was so fascinating. If he hadn't vowed to serve King Arthur for his whole life, he would have resigned and be willing to be Duke's lackey.

"Okay, let's go after the gossip, let's go chase the caster!"

"You're talking about it!"

...

The underground drainage system in Touki City is very complex, and there are countless waterways everywhere. After years of construction and construction, I am afraid that some areas cannot even be found on the design drawings.

Duke vaguely remembers that there was such an underground city in Paris in his previous life, which was larger than Dongmu City, and more than 2,000 kilometers were connected. However, the personal hygiene of the Gaul chicken was really sloppy, and the garbage was discharged directly into the underground waterway, resulting in more rats in the underground drainage system than the population of Paris citizens.

Well, you can't expect a group of people who never take a bath and rely on perfume to maintain their face. Facing the army of rats, Gaul chickens proudly used the rats as symbols of sewers. For this purpose, a sewer museum was built to commemorate their beloved mascot.

The gossip ended. Because Duke's magic power was locked, the caster and the Lord fled around in the complex underground palace, lacking in physical strength. Yu Shenglong Nobusuke was not even a magician. His physical strength was better than ordinary people, but he was limited. He noticed that Duke was getting closer and closer, so he had to return to his original nest and prepared to fight for the last chance to breathe with the complex magic mechanism.
Chapter completed!