"Yeah, I think so. The pain seems to be lessening.
At the on Hourai Island, Erza is casting a healing spell on Jin.
Today is September 29th, and it has been 12 days since Jin had returned home from the mess of the demon tribe.
During that time, Jin had received a healing spell once a day.
At first, Reiko cast it on him.
During that time, after Erza checked on him to see how his body was adjusting, the healing magic was handed over to Erza.
This is because the other treatment ...... Elsa's < has been completely cured.
* * * * * * * * * * * *
The story goes back to 8 days ago.
"Jin, how do you prepare water with one millionth of a gram dissolved in it?
"I'm curious too.
It was a difficult time when he explained in front of the whole Jin family that he had found a way to cure Erza's hypermagia.
"Jin-sama! Are you sure you can cure ...... Erza's disease?
Meene, the mother of my child, clutched at me with tears in her eyes.
"Jin! You're amazing! You've found a cure for which is an incurable disease in this world!
Reinhardt was so excited.
"<>? Such a substance is ......!"
Toa is impressed and looks at me with a desire.
"How can you make one in a million!"
Saki pushes out his question.
Anyway, the other members were also excited and in an uproar.
"Brother Jin, ...... are you sure ...... you can cure ...... this?"
Erza was the only one with tears in her eyes.
Saki and Toa were wondering how Jin had managed to dissolve one millionth of a gram in 100 cc of water. Saki and Toa were curious to know how Jin was going to make a solution of one millionth of a gram in 100 cc of water.
"Is it possible to weigh out one millionth of a gram?"
Saki wondered if Jin's engineering magic had such precision.
"No, it's impossible. But I can measure 0.1 grams with this.
Jin showed Saki and Toa the newly made scale.
"What is this? It has an unusual shape.
It was an upper-dish balance.
In this world, scales are either suspended balances or pole balances, and Jin was the first to make an upper-dish balance.
The upper-dish balance was the first one Jin made.
The disadvantage of a hanging balance is that it is difficult to put weights or samples on or off the balance, since there are strings attached to three points on the pan. On the other hand, the upper-dish balance is easy to work with.
After this weighing, Jin was planning to hand over the new upper-dish balance to Saki.
"I can weigh 0.1 grams, but that means one tenth of a gram, right? How do you measure one millionth of a gram?
Saki was still tilting her head, so Jin gave her a hint.
"<> is soluble in water, but its properties do not change. If you evaporate the water, it will precipitate back to its original state.
"Hmmm? If ......, then ............ will also be, what if, Jin!"
Saki finally understood the answer when she saw Jin preparing a huge container of water.
"Oh...if there is 1/1,000,000 grams in 100 cc. If there are 0.1 grams in 10,000 liters of water, then I should be able to dissolve 0.1 grams in 10,000 liters of water, right?"
In other words, dissolving 0.1 gram in 10 tons of water would produce an aqueous solution of the desired concentration.
Jin, who filled a small pool rather than a container with water, put 0.1 gram of <> into it and made a homogeneous aqueous solution by <>.
"I think I'll take a liter from here ......."
He had prepared a little extra of the precious remedy in case he met anyone else who might need it besides Elsa.
He divided the solution into 10 crystal vials of 100 cc each, and separated the <> from the remaining aqueous solution.
After extracting a little less than 0.1 gram of from a large amount of water, Jin carefully seals it and discards the remaining water.
"Come on, let's get Elsa to drink this.
Jin took the bottle and was about to go to Erza when he stopped. Because Erza was standing right in front of him.
"......Erza."
"Brother Jin."
Erza looked at the bottle in Jin's hand,
"Is that the medicine?
Jin nodded. Jin nodded and held out the bottle.
"Yes. There should be no harmful ingredients in it. You can check it out if you want."
But Elsa shook her head as she took the medicine.
"No, my brother Jin made this medicine for me. I'll take it.
With that, she swallowed the medicine in one gulp.
"It doesn't taste ...... like anything."
"Well, of course it does. 0.1 grams in 10 tons of water. One part per million.
Gin, is this what cured Erza?
Saki, who was watching from the side, said with interest.
"No, it takes about two days for the <> to be absorbed into the body and finally settle in the brain cells.
"I see."
* * * * * *
And back to the beginning.
Two days later, Elsa woke up feeling refreshed.
"...... is this proof that the medicine worked?"
Of course, she had never had a bad night's sleep before, nor had she ever been in a bad mood.
It's just that I no longer have the discomfort that I took for granted.
It's as if I thought 100 was the highest score and then I realized there was more than that.
Or maybe it's the feeling of having a clear nose after a cold has gone away. Anyway, I felt good.
When I told this to my mother, Meene, she burst into tears of joy. She hugged Elsa.
"Erza......,Oh, thank God......."
Since Erza was found to have excess magic power, Meine has always been by her side, acting as an outlet for her excess magic power.
The excess magic power (mana) usually appears in the form of fever.
Whenever Erza had a slight fever, Meine would immediately have Erza use her magic to deal with it.
By the time she was over thirteen years old, Erza had learned to feel the sensation and was able to handle it on her own, but after Jin made her a bracelet that absorbed excess magic power, she no longer had to do so, and she felt she could live as a normal mage. I thought I could live as a normal mage. And I felt happy that a normal body is wonderful.
But this time, it was even better.
"Jin, my brother ......, my benefactor."
He was the one who rescued me from the Unification Party (Unifiler) when I had abandoned home.
He is the one who gave me a place as a sister when I was lonely.
The one who saved my birth mother and let me meet her.
The one who made me a bracelet to cure my excess of magic power.
The one who taught me the new world of Magecraft.
The one who showed me the way to the heights of otherworldly science.
And now.
The person who cured me of my magical overload, which I thought I would have to live with for the rest of my life. .......
"......I will give my all and return the favor."
Elsa, secretly determined to do so, heard that the complementary cells that made up Jin's body were inactive, and offered to cure him herself in order to eliminate them.
"<>...... Oita, active."
* * *
Elsa was surprised at the imbalance of Jin's body when she examined it seriously. But now.
"More than half of it is activated.
Hearing this, Reiko, who had handed over the role of casting the healing spell to Erza, smiled.
"In less than ten days, my brother Jin's body will be whole.