Kujonin

"So, it's a pond survey. I predict that this pond used to be a fish farm in the past."

Remi explained.

"To that end, I want to drain all the water from the pond once and check the sediment at the bottom. So, Naoki, can you make a water bag to drain the water?"

Versa asked me.

"I see."

"Can you really do that?"

Remi asked me to be suspicious.

"Well, look, please help Mermo."

"Yes"

Take out the demon's leather and sewing tools, have Melmo make a water bag, and sew the magic circle of space magic.

Draw a magic circle on paper and have Melmo sew it. Although slightly modified, Melmo, who has high sewing skills, is much faster. In the end, there were two water bags that could hold any amount of water.

Both water bags are submerged in the pond and water is poured from the pond into the water bag, but the water level in the pond does not readily drop.

"Is it possible to drain the water at once with a water bag?"

Bersa said.

Would it be better to widen the mouth of the water bag a little more?

Take out the large demonic leather and have Melmo make a water bag again. The mouth is enlarged so that gravity magic can be sewn together with the magic circle of space magic.

When you put a large water bag into the pond, the water level of the pond dropped.

"I really drained the pond!"

Remi was surprised.

"Hey! Is the water in this pond drained but is it okay?"

Isle cried out from another pond in the hollow.

"Oh, okay!"

Bersa replied.

"There are always two ponds in the depression of the evacuation center, but it seems that the two ponds are connected."

Bersa said.

"why?"

"I think it was different for each use! There is no waterweed in this pond, but there is a waterweed in the other pond. In any hollow, one pond has waterweed and the other one is waterweed No, but I'm not sure why we did that. When the water runs out, investigate it. "

Remi explained.

When the pond completely ran out of water, sludge-like sediment had accumulated at the bottom of the pond. The smell is also very strong.

All of our employees wear masks and change into jumpsuits.

"Good, cool!"

Remi looked at us and said, The mask was left over, so I gave it to Remi and Rita.

Everyone descends to the bottom of the pond.

The bottom of the pond was so smooth that it seemed to fill up after a while.

Is the depth of the pond about 180 cm deeper than my height, which is about 170 cm? The pond is 180 centimeters high, and its length and width are both about 20 meters.

"Hey, there's a fish monster bone!"

Remi was picking up a white bone from the sludge. If a fish monster were alive, it would have been a worthy fish monster about 30 centimeters.

"It looks like there was a shell monster."

Versa was picking up a shell.

Rita and his employees were picking up fish monster bones and shells one after another. There seemed to be various species of fish monsters, and bones differed in size and shape.

"It seems unlikely that it was a fishing ground."

"Yeah, but it doesn't seem to be alive anymore.

I heard a conversation between Remi and Versa.

"Well, there are so many sludges that the fish cannot live."

When I said casually, both looked back and looked at me.

"sludge?"

Bersa asked.

"Well, why don't you say sludge? Now, I was saying that when I was in front of the mud ..."

Also, did I say weird things?

"Not sludge, sludge?"

Bersa asked.

"Why it smells?"

"Yeah, it smells"

"No ... so the microorganisms are dead and rotten, so it's like this?"

"Nnn !?"

Bersa and Remi all put their hands on their chins and looked at me.

"Ah! It's not a microbe, it's a micro-monster?

"A friend of Sealight? Does this pond shine?"

Versa was asking Remi.

"No light, no light"

Remi answers seriously.

"Naoki, tell me a little more."

Versa grabbed my shoulder with muddy hands and said, The hands smell very much.

"Ok, okay, I'll teach you. Go up a little. It smells!"

Once, everyone goes up from the bottom of the pond and takes a break.

I clean and clean everyone.

"I can do anything!"

Remi was impressed.

"And what about sludge?"

Bersa asked.

Everybody sits around me, as I listen to in class.

"The smell of mud on the seashell. Versa has microscopic skills, so take a look. Is it a small monster carcass?"

"Huh? Wait, is this all a monster carcass! Isn't it smaller than a tick?"

Versa looked at the sludge with his microscopic skills and raised his surprise.

"So, why would a fish monster die if there was a sludge?"

Remi asked.

"Mmm ... I'm not that detailed, but there are microbes, not microbes ... there's a tiny monster."

"Huh? Where?"

"I think it's everywhere, maybe everywhere. See, for example, if you leave food, it rots?"

"Well, if you don't eat it you'll rot"

"Mould can grow"

"Yes, it can be moldy."

"Mold is a collection of small demons."

""""e!?""""

Everyone was surprised at my words. Demon scholar Versa is also surprised.

"Because Versa is a sorcerist, do you understand the ecological cycle?"

"I know that much. There is a monster that eats plants, there is a monster that eats that monster, and the monsters grow dung and grow plants. That's why monster dung is used as fertilizer in fields."

"The shit isn't shit? There must be a little monster that is breaking down the shit ..."

"Eh? Is that a monster?"

Versa opened her eyes wide and looked at me.

"I think so ... I haven't checked it, so I can't say anything. That was where I was before."

"So then?"

Remi heard. It was. It was about a pond.

"There are also creatures in the pond. There are both plant and animal creatures, and vegetable creatures photosynthesize in the pond. See, like these leaves "

I said that I would pick out the elongated leaves around me.

"photosynthesis……?"

Aisle, listening to her, was tilting her head. Everyone else is leaning.

"Oh, right?"

I taught everyone what to learn at school in the previous world, from explaining chloroplasts to explaining carbon dioxide and oxygen, the role of the lungs, and eutrophication.

"In other words, the fish in the pond were starved of oxygen and the monsters of the fish died. Did you understand?"

"Well, there's too much information to remember at once!"

Isle is complaining.

"But I understand, that while you're doing this casually, there's a lot going on!"

Melmo said excitedly.

"Wow, what kind of knowledge are you learning?"

"I'm surprised, I'm already surprised!"

Rita and Remi said while pricking eyes.

"Does the president always think about that?"

Seth seems to have been embarrassed.

"After all, Naoki is strange."

Bersa said he was sorry.

"But knowledge is nothing but knowledge.

"Exactly!"

Remi pointed at me and said,

"Let's make use of Naoki's knowledge to revive this fishpond!"

"If we can revive this fishpond, we can do it in other depression ponds, which will also solve the food shortage during the rainy season."

Remi and Bersa have turned to me seriously.

"Is that a survey for that?"

"so!"

Bersa replies good.

"Well, what did you say you were doing to rebuild the fishpond?"

"Yeah. If you can wipe off the sludge in the pond with a cleanup, you don't think that the construction will take much time?"

I tried cleaning up the pond, but only a little bit of the sludge on the surface.

"That's impossible"

"I guess I had to ask for help."

Versa laughs at her.

"I see! I see. This is the job of asking the people in the southern cave! Isle, you have the money?"

"Oh, I make a lot of money."

Isle is full of breasts. Advance payment is secured.

"Cleaning the bottom of the pond to make a fish pond. Isn't that a bad plan. Will I get paid?"

"I work with officials. If a fish pond is made, the Morales people will be saved a lot. I have to get a little money!"

Remi left and beat my heart.

"Are you successful?"

Rita asked me.

"I have to clean the sludge and actually try it. I don't know. There is also the mystery of aquatic plants."

"Yes! I don't even know why there are two ponds in the hollow!"

Bersa said.

"It's probably the wisdom of the old people, but you can't use it without knowing the reason."

"I have to repeat experiments and observations."

Seth and Mermo were laughing at me and Bersa saying, "You said that in the desert."

First of all, I got hungry, so I went to the bow hut and used a kiln and a table. By the way, he also looks at the bow. What is going on in the field? I'm worried that Versa said she helped a bit.

Rita was in a hurry when she said, "Let's go to the hut of the bow," if she hadn't seen Remi yet.