I, the Great Sage (Momo), and Abel, the hero, are (...) moving (...) on the underground lake of the Great Labyrinth. 

　We are moving like water skiers, using the water magic of "surface walking" and "water flow". 

"Master!　You're so fast! 

　Momo seems to be enjoying it. 

"Makoto-san!　The demons are chasing us from behind! 

"Hmm? 

　It's a good idea to have a good idea of what you're looking for. 

　It seems that they are trying to attack us. 

　You're challenging me to a speed contest?　Interesting. 

"Then hold on to me while I accelerate. 

"What? 

　At my words, I heard two voices. 

　--Water Magic, WATER JET 

　This is an original magic that I created just for fun. 

　The next moment, my body was hit by an acceleration that resembled free fall. 

　A splash of water like an explosion went up. 

　And then I pulled the demons chasing me from behind far behind. 

　I caught a glimpse of the Sea Serpent and the Kelpie pouting. 

"Aaaaah! 

Aaaaah! 

　I'm not sure if this is a good idea or not, but it's a good idea. 

　I'll be back. 

I'm not sure what to do, but I'm going to do it. 

"Makoto-san, ...... you don't have to go that fast, do you? 

"Oh, yes, I'm sorry. 

　I'm not sure what to make of it, but I'm sure it's a good idea. 

　We are currently at the edge of a subterranean lake. 

　There is a huge submerged cave here. 

　This is the path that leads to the lower levels of the Great Labyrinth, and we haven't gone any further in our last adventure. 

　Or rather, this is where the abominable dragon came from. 

　I missed it. 

You two hold hands with me, please. 

"Yes, Master. 

"Okay, Makoto. 

　I hold hands with them and use water magic. 

　--Water magic, underwater breathing and water flow. 

　We went through the underwater cave. 

I'm not sure if you've heard of it or not. 

　I used my "night vision" skill to look around in the pitch-black cave. 

　There are many huge aquatic monsters. 

　That shadow that looks like it's about 10 meters tall is probably a ...... shark monster. 

　I'm not sure why there are sharks in fresh water. 

　I can also see a huge sea snake and a water dragon. 

　Let's proceed without being spotted. 

I'm not sure what to say.　Why did you suddenly decide to go to the deepest level of the Great Labyrinth? 

I've heard that it is the old dragons that nest in the depths of the Great Labyrinth. It's dangerous. ......? 

　I'm not sure if this is a good idea, but it's a good idea. 

　It seems that they are frightened of the huge demons in the Great Labyrinth. 

"Well, you'll find out when you get there. 

"Huh. ...... 

"Oh, I see. ...... 

　I fumbled vaguely. 

　Of course, you can't go to the deepest levels of the Great Labyrinth without a purpose. 

　There is a clear purpose. 

　I dug up my old memories. 

　It was not long after I arrived in the other world. 

　I was reading various books in the library of the Water Temple. 

　--The Adventures of the Five Continents, by Uther the Adventurer 

　A book of records written by a great adventurer over a hundred years ago. 

　After arriving in another world, I was studying alone, left behind by others, when I came across the book. 

　I loved that book so much that I read it over and over again. 

　I loved it so much that I read it over and over again. It told me about the various labyrinths and unexplored areas of this world. 

　Of course, I also read about the largest labyrinth in the western continent (Labyrinthos). 

　The West Chapter of the Adventures of the Five Continents. 

　There is a passage that says 

　--Uther, an adventurer, visited the Great Labyrinth (Labyrinthos). 

　The purpose of his visit was to catch a glimpse of the holy dragon that flew through the sky carrying Abel, the savior who once saved the world. 

　A thousand years ago, Savior Abel met the white holy dragon at the deepest level of the Great Labyrinth and promised to save the world together. 

　As promised, Abel straddled the back of the holy dragon and defeated the demon kings. 

　Uther, the adventurer, was excited in anticipation of his encounter with the legendary holy dragon. 

　He would meet the legendary dragon! 

　However, there was no holy dragon in the deepest layer of the Great Labyrinth (Labyrinthos) ....... 

　Like Abel, the savior of the world, the legendary holy dragon has also gone away. 

　This is the text. 

　If this is correct, then even if I were to explore the Labyrinth a thousand years from now, I would not be able to find the Holy Dragon. 

　However, this is a thousand years ago. 

　There is no doubt that the legendary holy dragon is here. 

　And next to me is Abel, the hero of light. 

　I'm sure he'll lend me a hand! 

　Also, ......, in this era, the only means of transportation is on foot. 

　To be honest, it's hard to walk all the time. 

　I wanted to secure my "legs" as soon as possible. 

　That was my goal. 

　Of course, I can't explain it to Momo and Abel the brave. 

　I haven't revealed to them that I'm from the future. 

　Incidentally, the adventurer Uther has also challenged the Undersea Temple. 

　Or rather, he has challenged all three of the world's final labyrinths (last dungeons). 

　The description of the "Undersea Temple" is as follows. 

　--The description of the Underwater Temple is as follows: "Uther, the adventurer, took on the challenge of the Underwater Temple. .............................. .................. It's impossible. Let's give up. 

　Why not, Mr. Uther? 

　Please try a little harder. 

　One of the reasons for the lack of popularity of the underwater temple is undoubtedly due to the adventurer Uther's book of records. 

　At the time, when I read this article, I wanted to refrain from visiting the underwater temple. 

　Remembering this, I slowly made my way through the lower levels of the Great Labyrinth. 

　The underwater cave was long and dark. 

　It seemed to go on forever, but the end came abruptly. 

　I hit a dead end in the underwater cave. 

...... This is a dead end, isn't it? 

　This path (route) seemed to be an outlier. 

I don't think we can go any further. 

　I'm not sure what to make of it. 

　It's a shame, but this is the end of the adventure. 

　I was about to turn back. 

I was about to turn back when I heard, "Hey, Master. Is there anything over there? 

"Hmm? 

　Momo grabbed my hand and pointed to a corner of the cave. 

I couldn't see much, even with my night vision skills.　 

　I used my water magic and slowly approached where Momo was pointing. 

　There was a magic circle of transference on it. 

"How did you find it, Momo? 

I didn't notice it at all, either. 

　Abel and I were surprised. 

I've never noticed it either." Abel and I were surprised. "Heh, it looks like my eyesight got better after I became a vampire. 

　I'm sure you'll be pleased to hear that. 

　I took a closer look at the magic circle for the transfer. 

The destination isn't that far away. It's not that far away. It's probably a deep level transfer, ......? 

Makoto-san, ......, you shouldn't be so careless with this transfer. 

This is probably a natural transference magic circle created by the labyrinth (dungeon). Don't worry. 

　It is said that labyrinths create transference magic circles at dead ends in order to lure explorers into the depths. 

　It's the first time I've seen one. 

　I feel like I'm exploring a labyrinth (dungeon)! 

　I'm so excited! 

Can I go? 

　I'm not sure what to do, but I'm sure it's a good idea. 

I'm sure you'll be happy to know that I'm not the only one who's interested in this. 

I'm sure you're right. 

　Both of them are honest. 

　It's okay if you disagree with me, but ....... 

　I'm not sure what to do. 

　I stood on top of the magic circle, holding hands with the two of them. 

　The next moment, a teleportation was triggered. 

　The next moment, the teleportation was activated. 

　The place I was teleported to was not underwater. 

　I was in a huge cave, and some parts of the cave were glowing dimly. 

　When I looked at the nature of the light, I realized that it was a high-purity magic stone. 

　Is this ......? 

　--the deepest level of the Great Labyrinth. There is a "star vein" flowing nearby. 

　Because of this, the magic power (mana) from the star vein makes it possible to find huge natural magic stones lying around. 

　If you sell them, you can make a fortune, but is it really worth it? 

　The depths of the Great Labyrinth are a dragon's nest, and even an ancient dragon lives there. 

　There is no guarantee that you will make it out alive.　　(Reference: The Adventures of the Five Continents, West Chapter) 

　We are in the depths of the Great Labyrinth. 

　And fortunately, there are no demons within sight. 

　However, thanks to my "Searching for Enemies" skill, I can sense the presence of a ferocious demon from deep within the cave. 

"Abel-san, Momo. Let's take a break here. 

"Yes, yes, ....... Makoto-san, is this ......? 

Abel-san, Momo. There must be stronger demons ahead than before. 

Are you sure you don't want to take a break ......? 

I'll take turns resting. I'll take turns resting. You go ahead and rest. 

I understand. 

　I'm not sure if this is a good idea or not. 

　I dried their clothes with the water magic method. 

　After that, we ate a simple meal of bread and ham that I had brought with me. 

　The brave Abel and Momo wrapped themselves in the blankets I had brought with me and lay down. 

　Soon, they heard the sound of sleeping. 

　While they were resting, I was on guard duty. 

　It's quiet in the labyrinth. 

　The shining magic stones dimly illuminate the dimly lit cave. 

Lucy, I've reached the depths of the Labyrinth. 

　I muttered quietly. 

　It seemed like a long time ago that I had turned back at the middle level. 

　I wondered what Lucy and Sasan were doing now.　I thought and realized. 

　They'll be here in a thousand years. 

　Neither of them has even been born yet. 

　I should go to ...... and train. 

　I practiced sun magic and fate magic. 

　While practicing, I thought about the future. 

　The depths of the Great Labyrinth, ......, were easier to reach than I thought. 

　I was going to split my search into several more sessions. 

　I didn't bring that much food with me. 

　Tomorrow, I'll go as far as I can and turn back, ...... I thought. 

　At that moment, the air shook like a mirage. 

　--I'll be happy to talk to you, my king.　I'm here to talk to you. 

"The Great Spirit of Water (Undine)......? 

　A beautiful blue-skinned girl was sitting next to me. 

　I didn't call her, but she seemed to have come on her own. 

　But just as well. 

　I was bored, that's for sure. 

　Besides, I had something to ask her. 

"Hey, Undine... Why am I the king? 

　She smiled at my question. 

She smiled at my question, "It is because you will be our king. I can see that. ...... 

　The Great Spirit of Water (Undine) answered with an enraptured face. 

　I'm sure you'll agree. 

　It's a good idea to take a look at the actual information on the web. 

　The Goddess told me that it was called the "Spirit King". 

　--And my soul can never become a Spirit King again due to the restrictions of Lord Noah. 

　When I came here a thousand years ago, I tried it once. 

　It was possible to "spiritize" only my right hand, but if I tried to "spiritize" my whole body, I would faint. 

　Apparently, stopping Noah-sama's followers does not remove the restrictions of the soul. 

　I stared at the smiling water spirit (Undine). 

　This girl is expecting me to become the "Spirit King". 

　But I can't do it anymore. 

　It's as if I'm cheating, and I feel awkward. 

　That's when I was in an indescribable mood. 

"By the way, ...... my king. I have a favor to ask you. ...... 

　The water spirit (Undine) twined her arm around me in a reserved manner. 

　This is a great way to make sure you are getting the most out of your investment. 

"What is it? 

　I'm not sure what to make of it, but I'm sure it'll help. 

　What the hell are they making you do? 

"Could you please call me by my name ......? 

Call my name? 

Yes. Yes, that's right. ...... 

Well, then. Can you tell me your name? 

　Oh, I'm so relieved to hear that. 

I don't have a name. 

"What about ..................? 

　I don't get it. 

　As if to clear up my doubts, Undine continued to speak. 

"My king. Please give me a name. ...... 

"I will name you ......? 

　I'm not sure what you mean by "name me," but I think you mean "name me and then call me by my name. 

　I see. 

　I can't be the "Spirit King" anymore, but I can at least do that. 

　This is a request from Undine, who has helped me many times. 

　I have no reason to refuse. 

　The only thing is, I can't think of anything right off the bat. 

The name is ...... difficult. 

"Any name is fine, as long as my king gives it to me. 

"That's a good point, ....... 

　The Great Spirit of Water's eyes sparkled with excitement. 

　The name of the Great Spirit of Water, Undine ...... hmmm. 

　I'm not sure what to do.　It's not a good idea. 

　You can't give her a glittery name. ...... 

　I think so. 

So, let's take the letter D from Undine, and since we believe in Noah of the Titans, let's borrow the letter ......A from Noah. 

　Is that too much to ask?　For a moment, the thought crossed my mind that this might be too much to ask, but since it's Noah, I'm sure he'll just smile and say, "I don't care about such details. 

　Our goddess is very forgiving. 

I've decided. 

"Yes! 

"Your name is ....... 

　--Dia. 

"How about Dia? 

　When I told her, Undine made a dumbfounded face. 

　What?　Didn't you like it? 

............, Dia......, Dea, ...... Dea, what a great name! 

　Thank goodness, it doesn't sound like you don't like it. 

　At that moment, the body of the Great Spirit of Water (Undine) suddenly shone. 

What? 

　In the event that you have any questions regarding where and the best way to get in touch with us, please do not hesitate to contact us. 

　As if in response, the Grand Labyrinth shook greatly. 

　The magic power overflowing from Dia's body froze the ground, the walls, and the air. 

　This is not good! 

"Stop, Dea!　Stop, Dea! 

"Yes, yes, I'm sorry, my king ....... I'm sorry, my king . I was too happy to contain my joy. 

"............ 

　I'm not sure what to say, but I'm sure you'll understand. 

　I looked over the frozen depths. 

　Apparently, the Great Spirit of Water (Dea) was only too happy to see this happen. 

　I'm not sure what to make of this. ...... I may have done something terrible.