Although it was a short period of time, Dr. Aria told me about [Magic Eye] and how to control it.

I had contacted your fathers about being tailed by Dr. Aria, so it was hard to delude them...

"Well, Ray. I will teach you about [Demon Eye] from today, but Ray's [Demon Eye] has changed slightly. Have you ever had a head injury before? Occasionally, injuries to the head or eyes may cause [Demon Eye] to change.

"Uh, actually in junior year..."

I told Dr. Aria that due to the [chess gun] raid, part of my brain was defective, and that it contained an improved and adjusted [rainbow crystal] in my head and eyes to make up for it.

"... Cecilia did something amazing. I've heard of ways to force my abilities to increase only for a short period of time due to drug administration, but I've never heard of implanting crystals in my brain that process me arithmetically... Ray woke up feeling that the study of crystals, Ray's mother's [restorative magic] technology, and all sorts of miracles overlapped.

In fact, even if [rainbow crystals] can be implanted in the brain, we also have to mess with blood, organs, etc., so it was no problem to say that it was a miracle that the transplant was successful.

"There was some prospect of success from the master's material, but since the success rate wasn't that high, it was a bet I never wanted to make again.

"Right. Maybe doing the same surgery on me seems to have little chance of success. But now I know why Ray is able to control [Demon Eye]. If I had something in my brain to process, I was relieved that it didn't seem like it would be like me. And let me check Ray's prosthetic eye.

"What, how do you find out?

"It's okay not to be scared. My [Demon Eye] can find out more.

Thereafter, Dr. Aria was staring at her prosthetic eye with [Demon Eye] activated.

Dr. Aria is young in a position where I don't think she's over 20, and it's a bit illuminating when she looks closely...

"In my [analysis], I saw Ray's prosthetic eye, but it's close to [the demonic eye]. Maybe it's the effect of the crystals you said were inside.

"Dr. Aria's [Demon Eye] is amazing. In my [appraisal], I can only see the [status screen], and when I use it, someone else finds out, so it's hard to use.

"It's with me that I find out that I [analyzed] them. However, in my case, there is also the [demonic eye] of [operation]. This [Demon Eye] prevents you from discovering that you used your skills against them.

"That's a very useful combination.

"Yes. But to say that there are two [Demon Eyes] is a burden to me.

I started teaching a lot from Dr. Aria, and one day two weeks went by.

Dr. Aria has spoken with a more serious look than usual.

"Ray, I've already come to the limit, so I really need to tell you something today.

"Dr. Aria......

"First, our [Demon Eye] [Demon Eye] becomes [Demon Eye Crystal] after death. In more detail, there are originally crystals in the [Demon Eye].

"What, does that feel like my prosthetic eye?

"Yes. I was surprised when I saw Ray's prosthetic eye. I know very little about [Magic Eye], but I was trying to recreate [Magic Eye] by chance.

"I don't remember that time, so I don't know.

"It may be a good idea to use prosthetic eyes with the feeling of training [demonic eyes] I taught you.

"Yes. Okay.

"So, here's the real deal. Here is the [Demon Eye Crystal] called [Demon Eye Crystal], which was my best friend. I wanted Ray to inherit this and I worked out. And I want my [Demon Eye Crystal] to inherit, too.

"How do you inherit [Demonic Eye Crystal]?

"Eat."

"What?"

"When I eat it, it digests in my body, and if I have the aptitude, [Demon Eye] changes. There is little risk either. I would have eaten [the demon eater] if I had, but my best friend would be more than happy to inherit from Ray than I was without it.

"That's what I say myself, but what were you going to do if I were someone to abuse or dislike?

"In that case, I taught Ray only how to use [Demon Eye] and knowledge, and I didn't teach him about [Demon Eye Crystal].

"Okay. I will inherit Dr. Aria and her best friend [Demonic Eye Crystal].

It was a short period of time, but I trusted Dr. Aria, so I was glad that Dr. Aria trusted me too.