Apparently, this layer is inhabited by aquatic demonic beasts.
　Looking at the situation, it's clear.
　The walls and ceiling are slimy, and water is flowing here and there.
　It was probably underground water flowing in.
　There was a thin layer of water on the ground, and the sound of running water was constantly pounding my ear.

　It is more like a large underground water vein than an archaeological site.

　Another thing I found out.
　Although the site seems to be intricate, there is basically only one path.
　It does have a structure that makes it look like a labyrinth and disrupts the adventurer's sense of direction, but if you judge it calmly, it wasn't too confusing.

　I would defeat several demonic beasts in a single shot.
　It's quite fun to go up against A- and B-ranked demonic beasts.
　I've been dealing with a lot of humans lately.
　You can unleash your magic without hesitation when dealing with magical beasts.

　However, I still have to think about how to distribute the pace....
　If you get carried away and use your magic, you'll be back in a heartbeat.
　It's a good time to train yourself.
　I've got to bully my body to the fullest.......

　I smiled wryly.

　I passed through a narrow hole and emerged into a huge underground lake.
　When I shone the light on it, the surface of the lake glowed with a jewel-like green color.
　The ceiling was high, and large stalactites were pointing downward, dripping into the lake.

　I walked along the edge, watching it with a sideways glance.
　I heard voices.
　Human ones.
　I walked to its source as if I were being invited.

　What was illuminated by the [Bright Light] was a beautiful female limb.

　Light green hair that was wet and wet.
　Her skin is white as if it were clear, and she is drifting with a mature and mature scent to the fullest.
　She opened her mouth elegantly and sang a song without lyrics like a singer.

　It's obvious to see.
　It's a trap.

'Scylla....'

　It's a B-ranked aquatic demonic beast.
　Its beautiful appearance is a dummy, and its main body is a mermaid species that hides in the water.
　It doesn't have much offensive power as a single unit, but the "song" it emits from its mouth has a strong psychic-inducing effect.
　I already have a strong mental tolerance and it's not effective.
　But it's tricky to get a song that disturbs the magic around you, apart from the guidance skill you're currently singing, "The Cry of Magic".

　I'm not going to be able to activate my magic for a moment when it's sung, even by me.

　Many of the higher-ranking species are magical countermeasures.
　Dragon species like the Earth Dragon.
　An example such as the Sahagin Tempest would be obvious.
　This was the result of the Demon Race improving the existing magical beasts in the past.

''Let's get rid of them while we can.

　I put my foot in the water.

　Ah.......... Sheesh.........

　I hadn't acquired 【Water Surface Walking】 yet.
　It's an intermediate level magic, and the skill points required are rather high.
　It's not a magic I would use unless it's in a situation like this, so I put it on hold.

''7500 points........''

　That's about a tenth of the points I've earned to get here.
　Still, it seems like a waste.
　Points are precious.
　Especially in the current situation where the demonic beasts are getting weaker and the points that can be earned are on the decline.......

　And although I had noticed it rather early on, 【Village Person】 apparently required 1.3 to 2 times as many points to acquire compared to other professions.

　The difference was especially noticeable when it came to advanced magic.
　Some of the magic was even three times as much.

　Probably because of the incompatibility between [villagers] and magic.

　Oh dear........
　I'm not sure if there's any magic that triples the acquisition points.

　I activate the 【Searcher (Seeker)】 magic once.

　[Water surface walking]

　I granted the magic and walked across the water.
　I walked to Scylla.
　The other side doesn't move.
　He continues to sing a song.
　Apparently, he thinks I'm being guided by the song.

　I try to suppress the killing spirit as much as possible.
　I walked up to him randomly.
　I come to a certain distance.
　I pulled the sword from its sheath at my waist and tried to release it.

　That's when it happened.

　Shaaaaaaahhhhhhhhhh!

　Suddenly, a column of water stands.
　For a moment I see a pair of cloudy purple eyes.
　They attacked me directly.
　I tried to respond with magic.

''Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.

　The song of Scylla changes.

　It's "Penitential Song.
　The magic power in the surroundings is amplified by the power of the song.
　At the same time, my magic control goes out of control.
　In just a moment, I can no longer use magic.

　When I realized I was being dragged underwater, I was being dragged into the water.
　I was being dragged down through the water at a tremendous speed (I want to be in the middle of the water, I want to be in the middle of the water, I want to be in the middle of the water, I want to be in the middle of the water, I want to be in the middle of the water, I want to be in the middle of the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water, I want to be in the water.)
　I looked at my feet as I was constantly under the pressure that almost made my neck squirm.

　My ankles are firmly planted in the monster beast.

　It was swimming underwater at an extraordinary speed.
　Its appearance is far from being a fish.
　It wasn't a mermaid or even a half-fish.

　It was a horse.
　A horse whose hooves were used as a large water scraper.
　It was swimming around in the water freely with terrifying speed.

''A seahorn!''

　Tongue in the water.

　An A-ranked giant water horse.
　It is a magical beast that specializes in lurking in the water, jumping onto the neck of adventurers who peer into the water and dragging them in.
　It moves faster than a killer whale, and its power is comparable to that of a dragon.
　If caught, it was a monster beast that would inevitably kill you.

　I was slightly caught off guard.
　I had used [Detection], but the magical power reflected off the surface of the water, so I wasn't able to grasp it.

　However, I responded calmly.

'Oh dear........ You're losing skill points again, aren't you?

　I pay 8500 points.
　What I earned was 【Breathing Underwater】.
　As the name suggests, a magic that allows you to take in oxygen even when you're underwater.
　I activate it immediately and first secure the airway.

　Now it's just a matter of how to escape from Seahorn's restraints.

　The biting power of the water horse is strong.
　The bite of a waterhorse is strong enough to chew up even the bones of a large mammal.
　Even so, they couldn't bite down on the boots I made, apparently.
　It's a boot that has a lot of magic granted to it using the magic of the [Blacksmith (Blacksmith)].
　It's not something that can be easily chewed up, even if you are the owner of the same physical strength as a dragon species.

I'm not sure what to do. What should we do........

　First, we need to escape from the water.
　If you want to be flashy, you could use your fire-attribute magic to make the surface of the lake dry up and show the monster beasts what they see, but as expected, it uses too much magic power.

　Besides, I don't want to waste advanced magic on these little fish.

　I will activate my magic.

　[Ice Grain Bullet]

　It unleashed the flying debris of ice.
　It dodged the seahorn that bit me.

　Where is it aiming at?

　In fact, the water horse hadn't made that statement.
　However, it seemed like the demonic beast bared its teeth for a moment and smiled.

''Huh........''

　I laughed at the same time.
　I wasn't aiming at you, Seahorn.
　I was aiming at something else.

　The deflected ice pellets flew out of the water and landed on the ceiling.
　I'd like to be able to see it.

　

　My guess is as good as mine.
　As the cracks formed, stalactites rained down.
　One after another, they plunged into the water.
　It was like a harpoon, like a fisherman's harpoon.

　It was the Seahorn that we were confused by.
　Stalactites were falling in our direction.
　It fell on its massive body.
　It will not penetrate.
　But the impact loosens the force of my bite.

　Finally, I escaped from the jaw gate of the monster beast.
　I quickly activate my magic.

　[Storm Bubbles]

　The foam that contained the storm explodes in the water.
　This wasn't aimed at the Seahorn either.
　I used its propulsion to get out of the water.

　With a clunk, I jump out of the water.
　I see Scylla below me.
　It catches my figure.
　Quickly, he begins to sing "Penitence".
　But I'd moved from the water to the air, so I had plenty of time to prepare.

　I'm going to tune the magic power that was disrupted by the "Penitence".
　I prepared to chant the magic.

　A black shadow appears on the water.
　Seahorn is chasing me.
　The figure of the giant horse is revealed along with the water column.
　It opens its jaws wide and closes in on me.

　But it's too late.

　I activate my magic.
　I struck the magic with all my strength.

　[Lightning strike]

　A single ray of lightning struck the surface of the lake.
　With a tremendous sound and speed, it rushed through the dungeon.
　It wasn't just the Seahorn.
　Even Scylla would fall prey to the lightning fang.

''Gyaaaaaaaaaaaaaaaa!

　The exquisite singing voice turned to a scream.
　He writhed to escape, but there was nowhere to run.
　The Seahorn is also roaring with a desperate roar.

　The weakest attribute of both of them is "lightning".
　I'm sure you'll be able to find a way to make it work.
　Besides, my beginner level magic is more than three times as powerful as those adventurers.
　I'm not going to be able to escape death, even if it's a low-level magic.

　The lightning stops.

　The Seahorn jumped up and was slammed straight into the water.
　It turned black and the water horse turned white.
　Scylla did the same.

　Then something unexpected happens.
　Seahorn corpses were floating up from all over the place.
　Apparently, they had uprooted the demonic beasts that dwelt in the lake and decimated them.

　Skill points are coming in.

''56,000 points?''

　For beginner level magic alone, 56,000 points.
　This is delicious.

　Mufu!

　I involuntarily shout out.

　I'm going to [Multiply] the Seahorn here and eradicate it with elementary magic.
　Mmmmm........
　I've come up with a pretty clever idea.
　As soon as I've conquered this dungeon, I'll be able to rebuild it to my liking.

　I'll just report to the kingdom at random.

　After all, I have the right to explore this place.

　I grinned and walked further in.