At first, when Yuki heard the words Black Hole, she did not much reaction because she had seen countless black holes in her life, especially when she arrived at the Immortal Realm. But those black holes that she had seen were normal, there was nothing special in them other than they were a few levels stronger than those in the Mortal Realm. But when she saw the black hole in front of her, she already knew that something was wrong, it was different from others.
Even though it was doing the normal things that a black hole should do which was bend the space and time around it, as well as devouring everything in its sight. Somehow it felt different in Yuki's eyes, but she couldn't pinpoint what it was.
'What the fuck is happening… there is definitely something different in that black hole. But what the fuck is it?' Yuki thought to herself and when Ciel saw this, she only had a smile on her face. Of course, she was not going to say about her Ability because it was her secret, but that wasn't necessarily the real reason why she didn't want to say anything. She wants her Master to find out the special thing about her Black Hole.
After a few minutes of thinking and examining, Yuki still can't find out what is different from the black hole in front of her from the things that she has already seen. There was just nothing.
"It is just sucking up the same thing… there is nothing that is different. It is bending the space and time around it… Wait! It's not bending it, because if it is bending the concept of space and time, I would feel it because it is a massive black hole, plus the time around it should be slowed down because it is affecting Time itself. But everything is fine, even the Space, I don't feel any distortion, even the Gravity is fine. Don't tell me…" Yuki finally realized it and to confirm her theory, she looked at her surroundings, and then she finally realized it.
"This black hole… it can devour any concept, right? It is currently devouring all of the concepts possible in its reach. Concepts of Time, Space, Gravity, Life, and Death. That is why everything that surrounds it seems fine when everything should be slowed down, but because even Time and Space can't escape it. Am I right?" Yuki asked as she looked at Ciel next to her who still had a smile hanging down on her face as if she had already expected this.
"Well, you are correct Master. It can devour any Concepts possible. I'm actually not surprised that you were able to find out the concept and nature of this Skill of mine. I called it Zero's End because nothing can escape from it. Whether you are Death itself, or Life, it doesn't matter. You are meeting your end when you get sucked in. Just basically think of it as an Ultimate End. As for every beginning, there is an End." Ciel explained and when Yuki heard this she just smiled, it didn't even terrify her.
In fact, she found it fascinating because it was such an incredible ability and by far from what she had ever seen, it was the most powerful Ability she had ever seen. But of course, hearing the nerdy and weeb Fumiko's rants about the most powerful Abilities or Fictional characters, she knows that Concept Manipulation isn't even near the most powerful.
"Though I'm assuming that it cannot affect any fabric of Reality, right?" Yuki asked a mind-blowing question and Ciel would have never guessed that she already knew something like this. But either way, she still answered her question.
"No, I'm sorry to disappoint you, Master. But if you want a clear answer, the only people who can Manipulate Reality in the Immortal Realm are quite a lot actually. First of all, there are the Primordial Gods, but that's a given already. There are also a few Gods that have it, but because their Cosmology I guess is lower than those Primordial Gods, they will remain weaker. But all of us Demons can also Manipulate Reality, though to only a certain extent." Ciel explained very carefully and Yuki was glad about it.
Thinking about this, made Yuki laugh. Because it was clear to her that she wasn't even a percent in terms of power in front of this powerhouse. She can't even Manipulate any Concepts yet she was already asking for such information.
"Don't worry Master, we are here to protect you if you ever come across those people. I'm not trying to brag but… each of us Demons has the power that can rival the Primordial Gods. That is exactly why we are wanted by most people, though you don't have to worry about Momozano if you are thinking that she can see what we are doing. I have already altered it and it would be too late for her to realize it." Ciel said with a proud smile on her face and Yuki just looked at her so that she could continue.
"The only thing that she will see is you eating your dinner, as for the things that we are doing right now. It is happening in real-time, but it is like we are never here. Because as you know Master, all of those people that are associated with the Cursed Demon Goddess will be executed." Ciel said with a sad tone and Yuki completely understood her as she knows the feeling of being hunted down.
But the only difference is that she was unstoppable when she was back on Earth as everyone was simply terrified of her, but this was different. They were only unstoppable when Ashura was still alive, but now that she is dead or at least pretending to be, they can easily be hunted down. Because they can easily get outnumbered.
Ashura was different though. Everyone was terrified of her because of something and because the Primordial Gods refused to do anything to her which is still a mystery, no one was able to touch her as well as her people. Even if her 9 Demon Disciples were incredibly strong, they could easily get outnumbered and it was only a matter of time before they die.
"Well that sounds about right, but then again. I don't really care if Momozano can see us because I can easily blackmail her and she can't even do anything about it. Plus I'm sure that she won't do anything to you as you are only a Soul right now." Yuki just simply shrugged it off as she already knew that Momozano wouldn't be able to do anything.