I hesitated as to whether I should show the spell that was requested through Arisa or not, but thinking that the princess probably won't use it for anything strange, I take out the document about the spell I've brought.
Even if I got caught in something annoying because of this, I could probably do something about it through Nanashi.
"This is, don't tell me!"
"I had found some right spell, so I altered it a bit and made it so that it fulfills the request."
I pour water on the silver tray and then pour it with thick colored fruit juice.
After stirring it with a wooden stir stick, I ask Mia to use the spell.
"■■■■ ■ ■ ■■ ■■■ Remove Different Water"
The mixed fluid on the tray is gradually separating.
Eventually, the water is on the left side, and the concentration of fruit juice is gathered on the left side. They'll mix again if left alone, but this should be enough for the spell experiment.
I don't know what she want to use this for, but this might be useful for cooking and such.
"Amazing! Satou-sama, you're amazing!"
The excited princess holds my hands on the table.
Rather, she's been adding "sama" to call my name since awhile ago.
"The color is a bit different than the original fruit juice isn't it."
"Nn, condensed."
Arisa and Mia fold their arms while criticizing the magic's effect.
I've also made other spells, one that uses space magic and another that uses lightning magic, but the former has become an advanced level magic because it over-consume the capacity to pick up the molecules, while the latter makes use of the ionization tendency so it doesn't meet the requirement of separating the fruit juice.
In the end, the water magic that makes use of osmotic pressure has the best cost to performance ratio.
"Your highness, what do you plan to use this spell for?"
"--Can you promise not to laugh at me?"
The princess replied seriously to my nonchalant question.
"Yes, of course."
I replied immediately, but the princess seems to be hesitating about something.
"It's alright, Master won't laugh at people who are earnest."
"Nn, no problem."
Arisa and Mia back the princess when they see her like that.
It seems the princess makes up her mind with that, she resolves herself and speaks.
"I'm researching the method to return monsters into normal creatures."
The princess began to talk with such a shocking statement.
"Do you know that monsters are born from the concentration of miasma?"
"Yes, I do."
"Ever since I heard about it as a child, I've had this question, 『If miasma turns creatures into monsters, can't the reverse happen too?』--"
I did think about that too.
In every book I've read up until know, they've concluded that the process is irreversible, but I've been thinking even now that it should be possible to turn back monsters back with magic.
In fact, humans that had began to change into monsters after consuming Fiend Drug did stop their transformation when their magic power were extracted.
At the very least, I think that if it's immediately after the transformation, they can turn back to the original creatures by pulling out the miasma inside their bodies.
There is a darkness magic that can control miasma and create monster, so I think it's possible if I get that spell.
I didn't see it in the Forbidden Library of Shiga Kingdom, I think asking True Ancestor Ban or the knowledgeable Corpse in the Labyrinth's lower layer might be worth it.
It seems the princess is researching separation magic like this in order to link it with her [Turning monsters back into normal creatures] research.
"--I think that if the miasma in monsters can be pulled out, turning them back into normal creatures, the living space of people will open up more, and then even the people in the downtown will be able to live prosperously."
I agreed with the princess until the halfway through, but I couldn't really agree with the last part.
If people become the ruler of the world, great wars between people are sure to happen.
Moreover, if the monsters are created by the gods to become the deterrence of war, then I can't help but feel that making them disappear would mean violating the gods' taboo.
Furthermore, even if you can turn a monster back into a normal creature, I don't think you will be able to make the monsters in the whole world disappear.
Rather, if you want to enlarge living space, researching monster-repellent barrier should net you better result.