Levi sat inside a bathtub, half-naked. He was still nervous but, he thought that there's nothing that he could lose anymore when his old body perishes anyway.
Although, Hector was in a different situation. He has to survive the pain and quickly recover to not let his daughter sad. His eyes burned with determination at this point.
The thought of making his daughter cry because he was sick made him more excited rather than nervous. There's no one that can bend his will in doing the bloodline change now.
"What you see in front of you is my blood essence that was condense to it's purest form. But, let me tell you something first. Before you go thinking that this will completely change you into demons, then you are wrong. Your will to live on is going to be the key for surviving the bloodline change.", Lilith opened her two hands, maintaining a very red ball of blood that looks like a pill.
The both of them can feel the power within the pills, making Levi and Hector gulp in anticipation. They then looked at each other and nodded before taking the red blood pill in Lilith's hands.
"You will feel like your life is going to end after taking my blood essence. In reality, consuming a demon's blood essence is considered an impossible thing to do, because it will make the consumer completely copy the nature of the blood essence that they took.
"This is how we, demons, strengthen our bloodline purity. We consume the blood essence of the demons we kill, but that was a forbidden thing to do now, and instead, we give the low bloods our blood essence after they do an amazing deed for our kin."
Levi stared at the blood essence between his fingers intently, before looking up to ask Lilith, "So, what will exactly happen to us if we skipped the ranks up to the purest bloodline?", he said.
"You will significantly become more powerful than when you were a human, making your senses keener, your body stronger, and your star soul, fiercer. But, of course, before you get to that, you have to live first.", Lilith said.
"Did Luce take one of these, too? Maybe from your father or someone?", Hector played with the blood essence on his fingers, rolling and tossing it into the air.
"If you do something like that to my blood essence, I will never again give you something that precious and leave outside the inner zone, together with the star beasts...", Lilith glared at Hector, making him behave well like a kid, "And no, Luce never took something like that from any of my family. He was born with the highest bloodline purity just like me and other members of my family. We never knew if he has more purer blood, but I love him for what he is."
"And he became the Demon King with his own power... What an amazing man he is.", Levi said in awe, when he remembered the full path of Luce, he was like a god back there.
"Any more questions?", Lilith clapped her hands, turning Levi back to reality. Levi kept quiet, knowing enough is good, knowing it all is complicated. But, Hector raised his hand before they started.
"What will we become after we changed our bloodline?", Hector's face was serious this time.
"You will become a demon that completely matches your star soul. So, if your star soul is a beast type, you will obtain your beast soul's appearance in the simplest form, but you two will skip ranks, so you will retain your human form in the best case and will possess the innate characteristics of your beast souls.", Lilith said, plucking a grapefruit from a bowl on the table beside her chair.
"What if you have a weapon soul?", this time, it was Levi who asked.
"Then, your body will change to the best way it can, to properly wield your weapon soul. If you're weapon soul uses brute force, your body will become buffed to the point that you can swing your weapon soul in one hand. The same way happens to other type of weapon souls out there, with so many variations.", Lilith said, getting impatient.
"Why does these two keep asking questions, when all they have to do is swallow the blood essence I condensed?', Lilith thought, taking a bite from the grapefruit she plucked.
"Then, what if you have both-"
"What if you start already?! There's so much time for us talk about this later!"
"S-sorry...", Hector shrunk in his tub, feeling dejected.
"See you on the other side.", Levi nodded at Hector.
"Yeah, good luck, Old man.", Hector opened his mouth and swallowed the blood pill in one go. It tasted like iron in his mouth, with some warm pulsing sensation as it make its way down his throat.
The same also happened to Levi, while he kept his eyes closed, expecting some pain to emerge from his body, but nothing came. He opened his eyes after he waited for a moment and so Hector also looking confused.
"Well... That wasn't so bad. I guess it's over.", Hector chuckled.
"I'm glad it didn't hurt for us, huh. Luck is with us, my friend.", Levi smiled and brushed his white beard in delight.
"Don't be so happy, boys. The blood essence was just taking its time to flow all over your body...", Lilith said.
Hector still kept smiling, but it gradually faded as he felt his whole chest ache and became numb.
"and the essence should be beginning to work it's way from your lung.", Lilith continued.
Levi held his chest while groaning in pain, it felt like there was a fire inside him. 'It really hurts. Even if I braced for this, the pain is barely bearable.'
Then, a sudden pain afflicted both of them from the inside. Their lungs have exploded inside their chests and they both coughed up so much blood at once.
Hector screamed in pain, he can't even breathe anymore at this moment, and yet he still has an energy to scream. Then, the burning sensation subsided, and turned into freezing in just a second.
Levi gasped for air but, he can't breathe properly as both of his lungs was gone. The freezing cold turned their insides into a stone-like state.
The pain continued for at least two hours for both of them, but they didn't know that they were only suffering for five minutes. They don't even mind Lilith staring at them with no sympathy at all, and was staring with a blank face.
Finally, their chest pain was now gone, they don't know how long they were suffering now. They breathed properly to recover their strength but, found out that they cannot gather gracia towards their body.
'What is this?!!', they both thought.
The pain was gone upwards, however, all their remaining organs except the heart sudden popped like balloons. The two screamed in sync again.
The sensations were just like what happened to their lungs, but multiple places in their bodies felt like it's burning but also freezing. The two continued to scream in agony for an hour.
'Haaa.. Where am I? Ah, yes... We're changing our bloodline purity, and I think it took too long. I've been suffering for a day at that freaking tub.', Hector continued to breathe heavily, looking for anything he could perceive, but he couldn't seem to do it.
"Aah, another one of those foolish children that wanted to connect with the Gods. I would believe it if you say that you're dying at this moment.", Hector heard a woman's voice in his mind that seemed familiar to him.
"Who are you? Why can't I see? Tell me!", Hector reached out and shouted. He won't forget that voice until the moment he dies.
"Hmm... I'm kind of confused right now, seeing you. You're definitely a human but, your nature is more on the beast's side.", the woman's voice pondered in his mind.
Hector heard an echo of a liquid substance dropping on the floor behind him, or more like it was only in his mind, and instinctively turned his head around.
Then he saw the person that he really wished to see in his life, a beautiful woman with a golden silky hair stood behind him, pondering while staring at him.
"And yet, you have the a sinner's blood...", her glare pierced into Hector's eyes, however, he couldn't help but to cry in joy and sorrow, seeing the love of his life again.