Lua-san who has come here after the breakfast is going to tell the result of observation on the observatory. Since they don't want to publicize the matter about jellyfish, I lead her to the parlor instead of the living room. Lua-san isn't the only who tags along, Aialize-san whose face is still burning also follows.
"--and so, the ice cage lasted for half a day, and the stone cage lasted for two days, before the jellyfish escaped from them. The cages from the space magic of Aialize-sama are going strong even now for both the intermediate and advanced ones."
Fumu, space magic barrier is powerful after all. I checked the number of elves that can use space magic cages to Lua-san, but it seems that only Aialize-san and one of the elder can use it among those who are awake. There are only about 100 people who can do that even if we count the ones sleeping.
"However, the sleeping ones won't want to be counted among it."
"Why is that? Since it's the world tree's crisis, they shouldn't complain even if we wake them up right?"
"They are people who have chosen to sleep in order not to forget their memories."
I can't quite comprehend Lua-san's word. Lua-san seems to have guessed it as she begins to talk about the detail a bit more.
It seems that elves encode old information every 1000 years.
In my vocabulary, it's probably like changing [Episodic Memory] into [Declarative Memory]. Simply put, after a millennium has passed, [Memory] is irreversibly changed into [That short word called 'Memory'] it seems.
Of course the [Semantic Memory] seems to also be consolidated, but since there's no elf who does research to the point that it'll become a problem, this is omitted.
Thus, the elves who don't want to lose their memories no matter what are put to a long sleep. The place where those elves sleep look more like a cemetery than beds. It's caskets rather than cradles huh.
Of course there are also way to make the memory remain by force with magic, but the memory becomes disorderly and can't maintain its integrity, the elf who does so becomes emotionally unstable, and so there is no one who undergoes it without approval from the elders assembly.
It's difficult to live long huh.
"The seven high elves will be fine even if they wake up though. Those kids are sleeping because they 『Got tired』."
The high elves can entrust their memories to the world tree, so their memory won't be deteriorated. However, they won't be able to remember if they are not connected to the world tree, so it's not like it's all-mighty.
"Even though I've never directly met them in person, there seem to be high elves who hate every race beside elf, and some radical ones, so please think the way without waking them up if possible."
"I~guess, like Iflueze will absolutely say, 『Huhh? Pests you say? Just burn those things. Kuhahaha, it's a festival!』, and then proceeds to continuously fire 『DEL Inferno』 to make big fires."
I see, it doesn't seem to be the specialty of Biroanan clan.
Lua-san seems to pretend that Aialize-san's insider story doesn't exist, as she coughs to clear her throat, and returns to the topic.
The results about the matter that I asked the elder to inquire back then seemed to have come.
"First, they had tried investigating substances that the jellyfish hate, but they couldn't discover it. They can't find attracting substance beside mana. The jellyfish seemed to be attracted to magic tools that had been filled with MP and artificial life-forms like wisp, as they tried to reach it with their feelers when those closed in. However, to peel them off the world tree means that we need MP that exceeds the world tree, so it's realistically impossible. Those are their replies."
They can't find the way to make the jellyfish readily go huh, unfortunate.
I'll carefully read the written reports regarding the jellyfish. There might something that we have overlooked after all.
"About Satou-san's plan to use cages for the jellyfish, the clans that are interested with it are not only Beriunan clan and Burainan clan which are clans that like to do research, but also Zuwakanan clan, they're going to help during the experiment and the investigation."
It seems that although it was a plan that anyone could come up, there wasn't anyone that had tried it.
Unexpectedly, someone who thought of it might not said it out loud.
This is the first time I've heard Zuwakanan clan, but they seem to be a clan that live on the same continent as Biroanan clan. I see, this must not fail huh.
"Um, and the others are."
Lua-san reports other matters while turning the report paper.
About getting obstructed by other jellyfish when a jellyfish was separated for a certain distance away, it seems that the jellyfish around the area attacked with lightning together. At that moment, the jellyfish that was being pulled away would roll up its feelers and made an electric barrier to protect itself from the lightning attack.
When the jellyfish released strong electric attack, they seemed to rob the required MP from the world tree branches, and several branches that were caught by the jellyfish seemed to wither because of it.
I'm concerned with the relapse prevention after the jellyfish have been exterminated, but Biroanan clan have already thought about it. It seems that they're having artificial life-forms made by the high-elves to go on patrols outside the world tree.
"Artificial life-form like Behemoth is it?"
"Ufufu, that's not it. Behemoth shouldn't be able to fly, Biroanan should be using , and the summoned Ifrit should be using to summon flame butterflies."
Ah, not Behemoth, but wisp huh. Beside Lua-san, Aialize-san has reddened up to her ears, and she's slightly trembling due to embarrassment.
Since it's cute, I'll leave her as she is.
"However, isn't the duration short?"
If I'm not mistaken, the mana on the void sky is scarce they said.
"Yes, if they can replenish the initially needed MP that's large, it can be maintained for ten days, it's going on patrols to attract the jellyfish. Of course, when battle begin, it'll quickly dry the caster's MP, so they use the ship when it's the time to exterminate the jellyfish."
I see, it's more like a bait than a light trap huh.
It seems that the discovered jellyfish are to be exterminated by the ship that departs from the observatory. They seem to call it Light Ships.
"Every world tree has eight light ships each, but Boruenan only has four left. The goblin demon lord was rampaging a little over 100.000 years ago. Heroes didn't exist yet at that time, so three light ships were destroyed before the demon lord could be defeated."
Huh? What about one other ship?
"That was given to the hero as a reward for exterminating the demon lord. I think it's still at the Saga empire even now since it's been passed on every generation."
There are four other ships that are the same type as Jules Verne huh.
"E, even if you look at me with those eyes, you can't."
Aialize-san has given a warning ahead of time.
"I, I'm resolute you know!"
Ah, it's about that huh.
I think Lua-san who's giggling knows what I have in mind, but let's not correct Aialize-san's misunderstanding here.
However, if this world tree has less ships than the other world trees, I think it'd be better if they think about the forces to hold the line of defense against the jellyfish, post-extermination.