I've understood the cause of the jellyfish's frenzies.
There are around 30 jellyfish larvae in the branch several hundreds meter ahead. They look like oval balloons. They're as big as human torso, and brightly emit pale green light.
The jellyfish inside the cages are flickering to match the waves of the lights that emit from the larvae. Come think of it, it's said that, "They plant the eggs into the world tree" isn't it.
I reuse the net that the thieves used to catch the knights back then, and capture the jellyfish larvae with it. I use the net since [Magic Hands] are busy picking the broken parts. I throw the larvae that have been captured on the net to the void sky.
The self-defense lightning generated by the world tree mercilessly turns the jellyfish larvae into cinders. Of course, the world tree was aiming for me who was on a straight line from the larvae.
The jellyfish have changed from [Frenzy] to [Rage].
So that abnormal status also exist huh.
『The two have escaped, please come back fast! If you don't, I'll go there!』
My ears hurt from the evacuation orders that Aialize-san has entreated since awhile ago.
I'm sorry for her, but let me do as I please here. The ice cages seem like they'll break if I leave the jellyfish alone now. It'll be fine if they get back to their normal conditions, but I have a hunch that they would start rampaging.
『I beg you, please come backk.』
I'm sorry, Aialize-san.
I invoke the [Kaleidoscope] and [Survey Laser] magic I've obtained from the duchy capital scroll workshop together.
The Kaleidoscope magic is named by Arisa. This magic generates several mirrors that changes the convergence rate of light and reflect it. I can arbitrary control these mirrors after they've been created just like remote arrows.
This Survey Laser is the result of my experiment to create laser pointers. Of course it has no power to kill even if I shoot it with all my might. It's an ECO design that doesn't deplete magic power even if it's radiated for a long time.
The Survey Lasers that are harmless according to my AR are reflected by the Kaleidoscope, and diffused while leaving trails in the void sky.
The ice cages seem to have come to their limits early. The sleeping drugs seem to be still effective as the movements of the jellyfish are dull, they extend their feelers toward me like crawling in the void sky.
『Mou, stupid Satou.... I'll tell Mia and Arisa.』
Aialize-san's crying voice sure is also cute.
While thinking how to follow-up her, my consciousness is concentrated toward the Survey Lasers.
Alright, I've affixed the last line.
I clear off the Survey Laser, and fire [Laser]. Of course, I'm not converging the 120 lasers like I was doing against the great monstrous fish. That's going to be overkill. Before that, the excessive power of the converged laser would probably break the kaleidoscope anyway.
The 120 lasers become 10.000 when they pass through Kaleidoscope.
Countless light penetrate the void sky, shooting through only the jellyfish and pass through the gaps between the world tree branches, disappearing.
The miscalculation is regarding the ice cages. The locations where the laser penetrate it evaporate, and strange accelerations are happening. I can't let the ice cages be destroyed by the lasers. If that happens, hot steam will violate the world tree branches.
I go around the void sky with Flash Drive, and collect the ice cages into my storage. Some largish branches were broken when the ice cages crashed, but please overlook this much damage.
In the first place, it would have been simple if the request was for me to do the extermination. Yet, the request was for [The way for the elves to exterminate them], so the scale became large. Based on this failure, we should add about the removal of the eggs in the extermination manual.
The telephone from Aialize-san had stopped before I knew it, so I decided to prioritize the clean-up.
While I continue to use the lightning rods to ward the world tree lightning attacks like usual, I capture the jellyfish larvae on the other place. I felt that the larvae can be used against the jellyfish, but since it seemed so heinous, I passed on it. I gave a silent prayer to the larvae that had been roasted by the lightning, and moved to do the next work.
◇
I have completely destroyed about 70 points where the jellyfish colonies have laid their eggs. Of course I used the map search to discover their locations. Even though there wasn't even one when I last visited the void sky 10 days ago, just when did they lay their eggs. I should have searched again before the operation began.
Since there were some eggs that had slipped into a branch, I used [Magic Hand] to pick them out after confirming its location with [Through Eye] magic. Please forgive me for breaking the barks during that time. I didn't think [Saps GET] at all, nope. The sap that I got during that time became an item called [Contaminated Sap].
The world tree is made to think that the jellyfish is a part of it probably due to the poison produced by the jellyfish eggs. Since there were eggs that were deep inside, I decided to break the branches and went inside to destroy it. When I slipped into the branches, the world tree ceased its lightning attacks. The lightning is probably exclusive for external enemies.
The inside of the world tree branches is filled with earthen pipes-like things for water. The mana thickens as I get closer to the trunk. I cut my way through it while avoiding battles as much as possible against the self-defense antibody that acts typical of white blood cells, and devoted myself to destroy the jellyfish eggs.
◇
"Satou's reaction has disappeared."
"That's terrible huh."
I greet so to Aialize-san who's sunk down on the floor, looking at the ceiling.
"Mou, what are you so carefree about! He's saved the world tree you know!? Why are you speaking like that!"
Her angry face is beautiful too.
I tell Aialize-san who's unusually full of anger, "I'm home."
Her blank expression is quite nice too.
Since I had gone quite deep into the trunk, it was troublesome to go back the normal way, so I came back with [Return] magic that I had just made at the duchy capital. Looks like that was the reason her tracking lost track of me. Since I felt like I was being watched, I think that it was a magic similar to [Clairvoyance].
"Welcome home."
Aialize-san mutters, overcame with surprise.
"Welcome home."
Why, are you saying it twice?
"Welcome home, Satou."
I hug back Aialize-san who's clung on my neck. Arisa would have said, "Guilty", if she saw this.
"I'm home, Aze."
I replied so while lovingly stroked the hair of the sobbing high elf-sama.