"Why did a vampire evolve from sucking my blood?"
When she heard that question, the fairy queen gave an answer as if she had read it in a book. "There are multiple reasons. First of all, do you know what the vampire sucks?"
"Then what does blood contain?"
"Hmm? Red blood cells, white blood cells, or something like that?" Nathan tilted his head in confusion. "I don't know a lot about biology."
The fairy queen shook her head. "Your blood is influenced by your Ena and your soul. If you are a being from another world, it will change your blood as well. And due to your unique Ena that can summon a beast, we know that your blood is different from other people."
"That is weird." Nathan thought for a moment. "If that's the case, why would the one who discovered me to have Ena in my body consider me to have a tremendous amount of Ena? Meanwhile, I only had 60 Ena when I summoned my first familiar."
"60? What's with the number?" The fairy queen looked confused.
"Ah. This was my teacher's research. In fact, I was planning to give your hairpin to her. She had summoned all kinds of forest creatures, such as elf, spirit, dryad, and so on. I thought you would be compatible with her, and she was also a researcher, a quite strong one at that. But if you were not useful…" Nathan smirked.
"I see." The fairy queen nodded in understanding. "First of all, I don't have the knowledge about this measurement of Ena. Can you please fill in the information?"
"It's just a simple measurement of Ena by considering this Ena as particles. By taking advantage of this system, we will be able to measure the amount of Ena required in our ability, the core we swallow, and so on.
"I only get about 2 Ena whenever I swallow a proto-class core, but a genius can get 10 Ena from one core. I don't know the average, but we can probably assume it's 4 or 5 Ena per core."
"That can actually generalize a lot of stuff." The fairy queen closed her eyes for a moment. "If that's the case, I think I have two possibilities for you.
"Either you or your parents are special."
Nathan contemplated. "I have checked my parents, but they don't have Ena."
"In that case, the one letting her evolve is not your blood, but either your Ena or soul. Or they might be special without realizing they are special."
"Too much assumption. Can you elaborate on the first one?"
"As I mentioned before, you looked like a human, but it didn't seem like you were the real human. From the way you talk, I conclude that you are actually possessing that body.
"However, this must be a different kind of possession. A normal possession won't allow your Ena to merge with the possessed body. In your case, it's completely merged. I have never encountered this type of possession before.
"And if we look at your soul, the reason for a vampire to evolve after sucking your blood can be narrowed to one thing.
"You might be summoned to this world as a familiar, but at the same time, you are not. You are a special human from another world, one that can't be described as a human. That is the reason you're summoned in this world.
"The question is, 'How special are you?' From the looks of it, you are also not aware of your circumstances.
"If you allow me to research your blood, I might be able to find that answer. Unfortunately, that requires my main body to be here."
"…" Nathan looked down. He ended up with more questions. He was special? The only thing he remembered about his life on earth was how miserable it was. Just to survive, he had to trick his father and run away from his mother.
It was a stroke of luck that he managed to continue a decent life in that orphanage, but that was all.
'Wait. Is there something wrong with the orphanage? I mean, there are a lot of novels with orphanages having a big secret that turns the children into monsters, right? What a conspiracy theory! I want to be edgy right now, but I should think about this seriously.'
Nathan shook his head. "Nothing I can think of right now. Instead, how can the vampire evolve in the first place?"
"A vampire's potential is decided at birth. They will gradually increase their power by merely existing. Blood is a kind of catalyst that will speed up the process of them reaching their full potential.
"The blood itself has a strict qualification. First of all, you need compatibility. Drinking random blood will help, but compatibility will increase that effect by several folds.
"To increase their talent, or, you can say, evolution, they need to drink the blood of a higher being."
"!!!" Nathan widened his eyes. "Is that the reason you say I'm special?"
"Yes." The fairy queen nodded. "If your blood is not special, then I might have to search for another reason."
"I see." Nathan rubbed his chin, contemplating.
"May I know what was the vampire's talent before she evolved? How much did she need to evolve?"
"She evolved from a countess to a marchioness. I only allowed her to suck me once."
"Hoh?" The fairy queen squinted her eyes. "There had been several occasions in the past where vampires evolved. I even wanted to my blood to confirm it, but there was no vampire I could find back then.
"According to the record, there was a normal vampire that became a baron after drinking the blood of his summoner for two years. There was also a baroness that became a countess after a decade. You sure it took her a single time to evolve?"
The fairy queen's expression turned solemn. "You might be more special than I originally thought. If you let her continue, she might be able to become a duchess, no… a royal? No, she might be able to become a progenitor."
"!!!" Nathan widened his eyes in shock. 'Risa becoming a vampire progenitor?'