"It seems this doctor only provided medicine. He said he doesn't know why Fujino became pain insensitive. He said that it was her father's doing alone."

"Her father did it himself? Do you mean curing her, or giving her the medicine?"

I nod to the small difference between the two.

"Giving her the medicine of course. According to the doctor, Fujino's father had no intention of curing Fujino's pain insensitivity. Most of the medicine that the doctor provided was Aspirin and Indomethacin, steroids. According to the examination by the doctor, he says Fujino probably has Neuromyelitis Optica."

"Neuromyelitis optica...... Devic's disease, huh?"

Devic's disease. It is a type of myelitis and is a disease that causes numbness of the senses. Common symptoms are numbness in the lower legs and eyesight going bad. It even has the danger of making one blind. This disease requires early treatment with steroids. The steroids are what Touko-san mentioned before... what they call adrenocorticosteroid.

"In addition, they use Indomethacin which numbs the sense of pain. I see. That would indeed make her like that. She's not inherent or posteriori. Asagami Fujino lost her senses artificially. It's the exact opposite of Shiki!"

Touko-san starts to laugh. It's a bit scary, she is like the professor I saw yesterday.

"Touko-san, what is this Indomethacin?"

"It's a painkiller. It doesn't matter if it's peripheral or referred pain, pain occurs from reactions to "outside forces that might endanger life". An algesic substance is made inside your body which stimulates the nerves relating to pain. This triggers pain to your brain. It tells the brain that the body will die if it doesn't do something. You know what algesic substances are, right? There are things such as Kinin and Amin, as well as Arachidonic Acid metabolites which strengthen the two. Things such as Aspirin and Indomethacin control the Prostaglandin which is in this Arachidon. The pain from Kinin and Amin isn't much, so taking in a lot of Indomethacin would take away most of the pain."

Touko-san seems really happy, as she is relatively hyper.

To be honest, these Arachidon and Kinindon things seems like names of monsters to me.

"So it's a medicine to erase pain?"

"Not directly. If you want to erase the pain, a drug called opioid would do much better. There's the endorphin thing, right? It's that thing that the brain secretes to ease the pain. It works like that and opioid kills the pain in the central nervous system. ...... Well, I guess all this has nothing to do with the subject. I see. Asagami Fujino's father decided to seal her power by sealing her senses. A family totally opposite of that of Ryougi, which tries so hard to make ones with power. But what's sad is that her power became stronger by doing that. Magi from in and around Egypt stitch their eyes shut to keep their Mana within them. What's the difference between them and Asagami Fujino?"

... I was prepared for Touko-san's words, but I'm still shocked. I knew already that the Asagami family has children with special powers, like those of Asagami Fujino... ones born with different channels. They despised those children and tried to seal their power by any means possible. The result of that is... pain insensitivity. To turn off the channel for "special powers", they also closed the function of senses. That is why Asagami Fujino operates her power when her pain returns... because her sealed senses return.

"That's terrible. The only way for her to stay normal is to be abnormal."

That's right. Asagami Fujino could be in our world only by being abnormal in the form of pain insensitivity. But as long as she cannot feel anything, she cannot earn anything. She is only a ghost allowed to live in our world.

"If she did not feel pain, she would not have killed anyone."

"Hey now, don't treat pain like it's a bad thing. Pain is a good thing. The bad thing is the wound, you shouldn't get this wrong. We need pain, no matter how much it hurts. People can recognize danger because they have pain. Do we move away from fire simply because it sets our hands on fire? No. It is because your hand is burning, and it hurts. If that's not the case, we would not know the danger of fire until our hand burnt off. It is right for pain to be painful, Kokutou. Anything that doesn't have that cannot understand other people's pain. Asagami Fujino was hit in the back and got her sense of pain back temporarily. She defended herself for the first time from the pain she received after that. Those people that she didn't notice as dangerous before, she was able to recognize as dangerous because of pain. ... Still, killing them was too much."

... But Fujino does not feel pain. Those people died because of her defending herself, but they are partly responsible as they attacked her. You cannot make her bear all the responsibility.

"Touko-san, can she be cured?"

"There is no wound that cannot be cured. A wound that cannot be cured should be called "death"."

Touko-san indirectly calls Asagami Fujino's wound death. But the cause of these incidents is the stab wound in her stomach. If that pain comes back, if the cause of that pain is known......

"Kokutou, her wound cannot be cured. It will only continue to hurt."

"Huh?"

"She had no wound to begin with, Kokutou."

......Touko-san says something unexpected.

"Um... what do you mean by that?"

"Think about it. If you got stabbed in the stomach, would the wound heal by itself in a day or two?"

... That... is true but...

I get confused at the point Touko-san is making. It goes against all assumptions. Touko-san tries to hold back her laughter.

"Like you investigating Asagami Fujino's past, I also investigated Asagami Fujino's present. Fujino has not gone to any hospitals since the 20th. She did not even go to the personal doctor that she sees secretly."

"Personal... what!?"

Touko-san frowns in amazement.

"... You're good at searching for things but lack in insight. Look, the scariest thing for a pain insensitive person is something wrong with their body. Since they do not have pain, they cannot know of any sicknesses they might have. As a result, they have a doctor look at them from time to time."

I see. She is completely right. Then... do Asagami Fujino's current parents not know of her pain insensitivity?

"The trigger was a trivial misunderstanding, Kokutou. Fujino was taken down by a guy with a knife and thought she was going to get stabbed. No, I bet she did almost get stabbed. Since her sense of pain returned at that time, she could use her power too. Cut or twist... Fujino happened to be first. As a result, the guy's neck was twisted off and his blood spilled onto Fujino's body. Fujino must have thought that she had been stabbed in the stomach."

I can clearly imagine the scene... I shake my head.

"But that's strange. If her sense of pain is back, she wouldn't make that kind of a mistake. She would not feel pain if she was not stabbed.

"Fujino was in pain from the start."

......... Huh?

"I was shown her status by her doctor. She has chronic Cecitis... what people mistakenly call Appendicitis. Well, I guess that is why she went to the doctor. The pain in the stomach is not the pain from the knife, but rather an internal pain. Her pain ached from time to time. If her sense of pain returned right before being stabbed, she would surely think that she was stabbed. If you are raised not knowing pain, you wouldn't even make sure if the wound is there or not. Fujino would look at the stabbed stomach, and even if it didn't have a wound, she would think that the wound must have healed."

"So... it's a misunderstanding?"

Kara no Kyoukai: The Garden of Sinners, Volume 3, Chapter 5