Demon Lord's Reincarnation

Ren alongside Tanith arrived in the world were Christoph was born. The gravity in this world was lighter than in any other place Ren had been in which surprised him momentarily, but after a second he quickly adjusted to the gravity.

Ren then spread out his mana covering the entire world at this stage with his current power this was a simple thing to do. At this very moment, Ren could sense every single living being in this world. If it were him during his demon lord phase, this much information would have made him crazy but with his current abilities doing something like this really wasn't much of a problem.

"I found him."

The very second Ren detected Fyodor's presence he tore open the space in front of him and entered the crack in space Tanith followed close behind him.

...

Fyodor who was watching Regus train felt a fluctuation in the atmosphere and quickly took out his sword. Regus also sensed something was wrong and stood beside his master. A crack in space appeared before them, even Fyodor who has seen a lot over the two centuries he has lived was surprised as this was a first for him.

The very second Fyodor saw someone stepping out of the crack he attacked, attack first asked questions later. That was one of the things he learned over the years he has been journeying around the world. When you meet something unknown you beat it up first before you talk.

The speed at which Fyodor moved from his initial stance was so fast it looked like Fyodor had turned into lightning. Fyodor who initiated the attack was the one who suddenly fell to the ground looking at the sky.

Despite not seeing the other party's face Fyodor knew this technique. A technique that uses the opponent's momentum against them, this was one of the techniques Christoph used to defeat Fyodor in the distant past. Fyodor who did a one-handed flip before hitting the ground showed an excited expression as he looked at the person coming out of the crack in space.

When Fyodor saw that it wasn't the person he was expecting the excitement turned into irritation as he frowned.

"Who are you?"

"It's been a while Fyodor the eternal challenger."

It has been ages since Fyodor heard the nickname eternal challenger and all who knew of that nickname have long died.

"Are you a disciple of Christoph?"

"I'm something more than that."

"Wait, are you his descendant? That b*stard disappeared for centuries and had descendants?! I searched for that coward for centuries and to now find out he was having fun abandoning his former family for a new one."

"Who the f*ck are you calling a coward you sh*tty old man."

"... Huh? Not only did you inherit his martial art but you even talk like him."

"Even after all these years you stupid old man is still the same. This body which I'm currently borrowing is not a descendant of mine, but a reincarnation. The one controlling this body is none other than me Christoph Wolf, the one who reached the strongest peak of this world."

Fyodor stared at Christoph who was controlling Ren's body in a daze, but after a few seconds, Fyodor suddenly started laughing hysterically.

"HAHAHA!!! So that's how it was, since you're using the body of your so-called reincarnation that means you really did die. Doesn't that mean I finally won? since I'm still alive and you died."

Christoph who hadn't seen Fyodor in eons was bewildered by his response, it had been so long that even he forgot that this old man was like this. After his momentary shock, Christoph smiled and started laughing as well.

"I guess you're right, after losing two hundred and thirty-six times you finally got a win from me, congratulations."

The two old rivals laughed in synchronization but then Fyodor suddenly did a surprise attack and Christoph evaded.

"Do you think I'll really say something like that?! Do you think I'll accept winning by default?! I'm Fyodor the unbeatable swordsman!"

"It has been such a long time since I heard that nickname that I almost forgot you had such a nickname."

"You b*stard even after reincarnating and having a different face that irritating expression of yours is still the same."

"Heh, I thought you would do something like this old man. So you think you can win against me with your current strength?"

"Heh, I have imagined this day of our reunion for a very long time. I thought by the time we met the two of us would be two old men but who knew the world was such a magical place? I was able to return to my peak self, and you were able to reincarnate... It's been a very long time since I said these lines. I Fyodor challenge you the Demon Slayer Christoph to a duel."

Hearing those familiar lines coming from such a familiar face made Christoph smile that vicious smile that all of the reincarnations of the Strongest Mortal Soul had.

"I gladly accept this challenge, but... I'm telling you now I'm going to restrict my strength to the same level as yours."

"What do you mean by that?" Fyodor was almost growling as he spoke those words.

"Unfortunately, unlike before were our physical qualities were close, this body that I'm borrowing is far above yours. If I fought you using this body's full power even without using any techniques just by the overwhelming difference in power and speed of this body I would win with ease. I'm sorry to say this but the only way we could have that promised battle is if I put restrictions on this body."

Fyodor looked at Christoph's eyes and sighed. He knew that this fool who loved battle above all else would never lie when it came to anything related to the fairness of a duel.

"... I see... That truly is unfortunate..." Fyodor who dreamt of this rematch for such a long time has found that reality truly is a sh*tty place. "Fine then... I will show you that if we are of equal strength I could defeat you."

Seeing that Fyodor's determination did not waver even after learning the truth, Christoph nodded in approval. As expected of the person that could be called his eternal rival.