The sewers in Olari are different from those in the city, and they don't look dirty at all.

Not only is it neatly built, but the sewage flowing in the waterways is not as unclean as Rieg imagined, except for the air being a little muddy, it doesn't even smell at all.

This is due to the fact that the underground waterways of Olari are equipped with many magic stone products.

The slender branch canal is filled with blue-purple crystalline columns shaped like iron fences, and whenever water flows through, these crystalline columns purify the flowing water and turn it into clean water, making the water flow transparent and clear, making it impossible to imagine that it is being discharged.

At regular intervals, a magic stone lamp will appear on the wall of the sewer, illuminating the environment.

Thanks to this, Olalie's sewers are not dirty and foul-smelling, but rather overly clean, giving people the feeling of walking in a modern tunnel buried deep underground, so that people don't shy away from the place where the sewage is discharged.

Of course, walking in this underground waterway, the three of them are not without trouble.

The main trouble is the monsters that are active here.

That's right.

In the sewers under Olaria, there is monster activity.

These are the monsters that have sprung up on the surface and multiplied on the ground in ancient times, and although they are not as threatening as the monsters in the dungeons, they still need to be careful.

Alari's underground waterways lead to the sea in the southwest of the city, where purified sewage is discharged through brackish lakes that connect to the ocean.

In the ocean and brackish water lakes, aquatic monsters have always lived.

These aquatic monsters sometimes flow down the river into the cities, coming and going freely in the waterways that connect to the ocean, and the monsters that haunt Olarie's sewers are one of those types.

Therefore, when the three of them walked on the passages erected on the left and right sides of the ditch and walked forward, there would occasionally be aquatic monsters jumping out of the ditch next to them to attack them, especially a monster called the Raid Monster Fish.

It is a giant fish with a body length of 160 centimeters.

Although this fish monster cannot move on land, it can shoot out of the water like a torpedo, with splashing droplets and sharp fangs, and swoop at the prey that appears at the water's edge.

It mainly appears on the 25th to 27th floors of the dungeon, that is, the realm of the "Water Mystery City", its own combat effectiveness is not very strong, once it leaves the water, it will directly become the meat on the felt board, and it will be easily dissected, but the moment it strikes out of the water, if it is not detected in advance, it will also cause fatal damage to the careless high-level adventurers.

Adventurers who know this are all vigilant when passing through the "Water Mystery City" area, carefully watching the movement in the water and exploring, even the second-level adventurers of Lv.4.

At the beginning, Refia was almost bitten by a surprise monster that appeared in the water, causing the elf girl to be so frightened that she almost screamed.

Fortunately, there are also two Lv.6 swordsmen who accompany this Lv.4 Elven Magician.

"Poof!"

As the silver saber flashed through the dim sewer space, the raiding monster fish that shot out of the water was split in two and cut in half by the sharp slash before it could cut its fangs.

Ace swayed her blonde hair, and her expression stood in front of Refia, slashing the raiding monsters that kept shooting out of the water under her sword.

Rig shot it like an arrow, rushing towards another group of aquatic monsters that had climbed ashore.

It was a group of metal blue crabs with unusually developed pincers on the left or right, capable of delivering a heavy attack like a hammer strike, and their bodies were wrapped in metal steel shells.

The steel shell of this metal blue crab has a very high hardness, far exceeding the killer ants infested in the upper layer of the dungeon and the deadly wasp infested in the middle layer, if the weapon used by the adventurer does not have the attack power of the second level of armament specifications, it will only be bounced open by the steel shell on its body at the moment of slashing the metal blue crab, splashing a spark.

And this is not a matter at all for Li Ge, who is holding a special weapon of the first level, although the power of the attribute has decreased due to the fact that it is not bad, but it still has the higher attack power and sharpness of the weapons of the same level.

"Poof!"

The crystal long sword slashed through the air, like a cold arc of light, easily cutting through the steel shell of the metal blue crab.

"Poof!" "Poof!" "Poof!" "Poof!" ……

Li Ge unfolded his body and sword dance in the group of giant crab monsters, and as his body crisscrossed and crisscrossed, the crystal sword in his hand slashed through the surrounding monsters like a dance, killing them one by one.

"Bang!" "Bang!" "Bang!" ……

I don't know what's going on, the scale of the monster attack encountered by the three of Li Ge seems to be very large, when the two swordsmen continue to kill monsters like no man's land, there are still water splashes in the ditch on the side, so that one by one the raiding monster fish fly like torpedoes, attacking Li Ge and Ace.

"Why—How can there be so many monsters?"

Refia was stunned.

It's true that aquatic monsters swim up the river through the sewage-discharging waterways and come to the city's underground waterways, but there are certainly not that many of them, right?

If there are often aquatic monsters of this scale in the sewers that threaten people, then the technicians who come here every once in a while to carry out repairs are afraid that they will be killed, and the guild will immediately issue a mandatory task for the powerful clans to clean up, resulting in the information here will also be leaked out and known by the major exploration clans.

But Refia hadn't heard of this being the case in the city's underground waterways, which was undoubtedly abnormal.

It was Rig, who calmly spoke while slaying the monster.

"I'm afraid it's because the cannibal monster has been active here, right?" Li Ge said: "Those monsters that can devour even their own kind and are very eager for magic stones are undoubtedly natural enemies for aquatic monsters living underwater. ”

"So, when the man-eating flowers appeared in the underground waterways, the aquatic monsters here must have been alarmed."

"In order to resist this sudden threat, they follow their instincts and gather together, intending to rely on the strength of the group to fight against the cannibal flowers that threaten them."

"We've come across one of these monsters here, and we've been attacked by them."

This also proves that the three of them are on the right path.

Piranha monsters have been active in the area, and these monsters are proof of that.

"Kill them." Li Ge said decisively: "If you leave it alone, the next time someone sent by the guild here to repair the sewer equipment, you will definitely encounter an attack by this group of monsters." ”

As he spoke, Rig used his ability to adjust to Lv.6 and ran at high speed towards another group of metal blue crabs that had climbed ashore.

"Boom!"

His speed was amazingly fast, and during his run, he directly set off a wave of qi, crashing into the group of monsters, and knocking a group of metal blue crabs into the sky.

Seeing this, Ace's eyes froze, which also intensified the intensity of the attack.

"Poof!" "Poof!" "Poof!" "Poof!" ……

As a large area of sword light slashed out one after another, the raid monster that sprayed out of the water seemed to have collided with a web of slashing made of invisible sword blades, and as soon as it touched the net, it would immediately be cut into countless pieces, splashing a large amount of blood.

The two swordsmen, who were too similar, were as decisive as ever, and their awe-inspiring and heroic postures once again brought courage to the elven girl who longed for them.

"I'll do it too!"

Refia, who had calmed down, raised her wand and chanted her magic.

"Make a wish in the name of the Immortal.] 】”

"[O ancestors of the forest, O noble compatriots. Respond to my voice and come to the grassland. 】”

[The fetters of contact, the agreement of the feast. Let's dance around the circle. 】”

"Come, Elven Ring. 】”

"[I beg you to lend me strength.] 】”

At Refia's feet, a special magic circle unfolded.

"[Elven Ring]!"

The magic circle began to float upward, turning into a ring and wrapping around Refia's body.

This is the magic that Refia is known for.

Limited to the same clan, as long as you fully grasp the effects of the opponent's magic and chant, you can turn it into your own summoning magic ——— [Elven Ring].

It was because of this magic that Refia was given the title of [Thousand Elves].

At the same time that Refia unleashed this magic, Rig had already killed several times in and out of the metal blue crab group.

"Don't use fire-based attack magic! It's going to be untenable! ”

In a word, Rephiaton, who was about to unleash a big magic, was there.

Indeed, if you use fire-based attack magic and cause a massive explosion here, the sewer will definitely collapse.

Thinking of this, Refia directly changed the chant that was about to blurt out.

"[Frozen sky, high sky rain.] The white ice that dots the forest, please expel the shallow barbarians—]"

This is the magic that Refia learned from Arishia.

Like Riveria's Winter of Ecstasy, this is an ice-based wide-area annihilation magic.

"Freeze it, Winter Bondage.] 】”

Refia followed the instructions of the object of her longing and activated the magic that her predecessors had taught her.

"[Hail Crystal Dust]!"

The ring on Refia's body immediately shattered, turning into a surge of magic that surged above her head.

In the next second, the magic condensed into a ball of light that swirled above Refia's head.

Then, countless hail missiles appeared from the ball of light, drawing different trajectories, with a terrifying chill, shooting in all directions.

"Boom!" "Boom!" "Boom!" "Boom!" "Boom!" ……

The hailstone's magic bullets suddenly fell on the earth or monsters one by one, freezing the earth into ice, and also condensed the monster into ice, and then shattered.

[Hail Crystal Dust], this wide-area annihilation magic is characterized by a 365-degree all-round attack without dead angles, which can strafe any direction, although the power and range are not as good as Refia's own [Volley Fire Javelin], nor as good as Riveria's [Ecstasy - Fimble Winter] and [High - Sword of Victory], but the coverage of the attack range is quite high, so it is very useful.

As Refia performed this spell, she immediately sang another spell.

"[The light arrow of liberation, the bow stem of the holy wood, I am the famous hand of the bow. 】”

"Hold off, elf marksman. 】”

"[Penetrate it, it will be the arrow. 】”

"[Arc Ray]!"

Single-shot magic with tracking performance is done at a blazing speed.

However, when Refia finished chanting this magic, the magic was not launched, but together with her magic array, it turned into a small crystal sword and hovered beside Refia.

Refia muttered in her mind.

"[Sword Essence Chasing] - Activate."