Demon Lord's Reincarnation

Two gigantic beings faced off against each other. On one side was an Old God a powerful being that could manipulate some of the natural laws of the universe. At the same time, the other was a black dragon one of the strongest species of dragon that was not personally created by the ORIGIN but birthed from the mother dragon which was created by the multiverse itself. 

Despite being bigger than some planets from the lower planes the entire body of the Old God Gwydion was just the same size as the black dragon Tanith\'s head. Still, despite the size difference Gwydion stood proud and tall. 

"What are you doing here you lizard?"

"Heh, a puny god like you calling me a lizard." 

"You didn\'t answer my question, what are you doing here?" 

"I came to save the current incarnation of the Strongest Mortal Soul, so just step aside and leave. I don\'t really wish to ruin this reunion of him and me, so for now I will allow you to live." 

"A measly lizard trying to order me a God?" The more Gwydion spoke he started to feel a little frustrated and summoned a weapon in his hand. As Gwydion\'s frustration grew so did his anger, and his aura was also changing into something ominous. 

"Oh, you stink of madness... I see so that\'s what it was, it has finally happened. As expected those beings spiritually connected to that thing are so unfortunate. Hmph, I don\'t know if I should pity you or laugh at you." 

"How dare you lizard! The ORIGIN might not have directly created your species, but your birth came from the multiverse the ORIGIN created. How dare you speak like that to your own creator."

Gwydion who was still holding onto his sanity before was having a hard time at this point. The pace of the madness eroding his very soul has progressed dramatically. The battle with Ren and the meeting with a dragon that keeps on challenging him affected his emotions too much.

"Hmph, even though you\'re speaking so rudely to me I\'ll let it slide since this is a happy day and I don\'t want you ruining my mood. Here, even though you\'re an Old god I\'ll help you just this once since it seems you have given him a decent battle."

Tanith looked at the unconscious Ren who was smiling so happily, it was easy to guess what his final thoughts were before fainting. Tanith then lifted one of her claws and made a tear in space. An object floated out and appeared before the Old God. 

"That\'s a special potion that delays the madness eroding in your soul. It will relieve your symptoms for a few more years, I only have two bottles of this so be grateful." 

When Gwydion heard what Tanith said he could not believe his ears, there was something able to block the madness. Of course, Gwydion never even suspected that Tanith was lying since the prideful dragons would never lie. 

"How and why did you make this, also why are you giving me this thing?"

"So many questions, but fine I guess I can answer. Back when my companions and I first learned about the madness the ORIGIN was spreading, we tried to create a potion that could cure the ORIGIN of said madness, unfortunately, we failed. The potion was only able to suppress the madness and not cure it. Still, we were able to delay this day for so long thanks to this potion, too bad the materials needed for this potion were things I can no longer remember, but I\'m somewhat certain that those ingredients no longer exist, and even if they did the person who created it the only person who knew how to make the potion is no longer alive. As for your other question, did you not hear me the first time? I\'m giving it to you as thanks for giving his current reincarnation a decent battle. So drink it now and leave, but if you don\'t want it and insist on taking him from me, then I guess this will be your death day." 

Tanith\'s aura rose as she used her \'Dragon\'s Might\' which actually affected Gwydion who was an Old God. Usually, a normal \'Dragon\'s Might\' used by an Ancient Dragon would barely affect even a New God, but Tanith was no ordinary Dragon, she was second only to the mother of all Dragons in strength, so her \'Dragon\'s Might\' can affect Old Gods. 

"So what will you choose Old god?" 

Gwydion was silent as he stared at the potion floating in front of him, he then looked at Tanith whose size towered over him. The madness in him wanted to fight against the arrogant Dragon, it was also telling him to kill the current incarnation of the Strongest Mortal Soul, but the sanity that remains told him that it was better to accept Tanith\'s offer. After a long silence, Gwydion finally responded. 

"You said you had two of these potions, correct?" 

"Hmph, don\'t be greedy Old god. I already know what you\'re thinking, but the last potion is for someone special, so don\'t push it. Be grateful that I\'m even willing to give you this one." 

"..."

The two once again stared into each other\'s eyes. Tanith was already losing her patience, she wanted to end this farce quickly so that she could save the exhausted incarnation of the Strongest Mortal Soul. If Gwydion continued to delay giving an answer she would attack him without mercy. 

"I accept your terms, give me the potion and lower the barrier. I will leave after drinking the potion." Gwydion finally gave his answer. 

"You made a wise choice today little god."

Tanith handed over the potion, and Gwydion drank it. The potion quickly took effect as Gwydion\'s mind became a bit clearer, and the madness no longer overpowered him. The way the potion was stopping the madness from overcoming him Gwydion predicted that it would take a few more decades before the madness fully takes over him. A few decades wasn\'t really a lot of time for an Old God like him, but Gwydion was still grateful for that much. 

"Thank you." 

Tanith looked at Gwydion surprised by what he said, he never expected to be thanked by a God much less an Old God. It was hard to tell with her Dragon\'s face but she was truly shocked. 

"Heh, I never expected to be thanked by any kind of God. Hmph, but it doesn\'t feel bad. So now that you took the potion you may leave."  Gwydion hesitated to leave at this moment and looked like he wanted to say something.

"Why aren\'t you leaving yet, don\'t tell me you plan on going back on what we agreed on?" Tanith growled a bit as she spoke. Gwydion quickly shook his head and responded. 

"No, I just wanted to ask if you could tell me the ingredients for this potion." 

"As I said before, the only one who knew anything about the creation of this potion was already dead. I don\'t know about the other ingredients used, the only thing I know is it used a little bit of my blood to make it. If that\'s all you wanted to ask then leave now." 

Gwydion knew that he could no longer push his luck, it was already good enough that he knows that the blood of a Dragon was needed to make. Gwydion nodded his head and left.