Demon Lord's Reincarnation

The moment Fean died Edge who was possessing Ren's body went back into their soul realm. The moment Edge left the body, Ren's body which had numerous wounds was about to flop down onto the ground. Silika was already aware that would happen so she was able to catch Ren's body before it fell.

"Quickly call a healer!" Silika shouted at the dumbfounded Lance who nodded his head and started running.

Silika then used the link between them to slow down the bleeding. She then proceeded to transfuse Ren with the mana she had gathered using the scythe.

'It's a good thing that his body is incredibly sturdy. If it was anyone else this much blood loss could have resulted in something more serious than just fainting. The cuts he has are deeper than they look, and the chunk of flesh that he lost looks much worse upon closer inspection.'

While Silika was assessing Ren's current condition, Ren's eyes slowly opened. Once Ren's consciousness returned to his body he stood up and tapped a few spots on his body stopping the blood from flowing out. He then circulated his Spirit Aura onto his whole body and he even added his mana.

After he did that most of his wounds healed almost instantaneously. The only thing that was left was the missing chunk of flesh on his right shoulder. Using his mana and Spirit Aura could only take him so far, and he wasn't really that good with healing magic.

"Are you alright?" Silika asked as she approached Ren.

"A bit irritated but overall no problem," Ren answered while double-checking if the injuries on his body healed properly.

"Silika I need the scythe."

"What do-" Silika was going to ask what Ren needed the scythe for given the situation, but then she saw him smiling. The moment Silika saw that vicious smile on his face she understood immediately why he wanted the scythe.

"You're still not fully healed. Shouldn't you rest a bit first?"

"What are you saying Silika? This is nothing but a little flesh wound. As long as I keep my Spirit Aura up my wound will heal in no time. Also, I'm sure you are aware of what kind of being had given Fean that absurd strength."

Hearing what Ren said Silika had no reply. It was at that moment Lance returned with a mage that specialized in healing. When the mage saw the destroyed cave he was confused since he has been here before, but when he saw Ren he was even more confused. Lance had told him that Ren was severely injured and was bleeding all over the place.

But the Ren who was standing before him was not bleeding and had only one injury. He had so many questions he wanted to ask but he didn't say anything since Lance was already glaring at him. The mage proceeded to heal Ren's shoulder. The healing process was quick but was also a bit painful. When Ren's shoulder was healed, the mage was asked to leave.

...

Once the mage was gone Ren didn't want to waste any more time and started walking towards the city.

"Master where are you going?" Lance asked while following behind Ren.

"I'm going to the Adventurers Guild."

...

The moment Ren set foot inside the Adventurers Guild the people inside looked at the newcomers. After looking at Ren they noticed the beauty beside him. The moment they saw Silika some of the men wanted to approach her but then they saw Lance.

Everyone in town knew who Lance Resteti was, especially after he challenged the strongest swordmaster in town and was able to fight her to a standstill. Not only that he was also a Marquis and he was the one who pretty much governs this town. Adventurers might be considered free people, but they still needed to listen to figures like Lance. With that kind of reputation, Lance was a good enough deterrent for them not to bother Ren. Still, that was a good thing for them, more than it was for Ren since the moment they did something to Silika would've been the moment they died.

Unbothered by the onlookers Ren headed straight for the reception area and asked for all the available subjugation quest for a B rank adventurer. The receptionist wanted to tell Ren that he couldn't do all of these quests by himself but after Lance's insistence, the receptionist had no choice and she was forced to call the Guild Master.

The Guild Master stationed in this town was an A rank adventurer. S rank adventurers were usually the Guild Masters for big cities like Grenton, but for little towns like this, an A-rank Guild Master was enough, seeing as the town only had low leveled monsters surrounding it.

The moment the Guild Master spotted Lance he decided to agree to whatever demands he wanted. Even though the Adventurers Guild wasn't bound to a single governing entity like the royal family of any kingdom, they still needed to be wary of the nobles of each country.

If it wasn't any big request like joining a war against another country or aiding a criminal or anything similar to those, the Guild Master of any branch of the Adventurers Guild would listen to most requests of a noble.

...

After getting all the subjugation quests, Ren headed out and started his hunt. On the other hand, Lance was asked to stay behind and continue his training by swinging his sword.

Ren was now in a mountain region where a horde of goblins was spotted. With scythe at hand, Ren tracked down the goblin horde and found their cave. He proceeded to assault the cave and annihilated every living goblin inside.

For every kill he made with the scythe Ren could feel his mana slowly increasing. Even though he really wanted to fight his past incarnations right now his current strength was not sufficient enough. He was literally the weakest incarnation at the moment.

If he fought using his past form as Demon Lord Kretos, he could defeat the lower strung of his past incarnations, but he didn't want to do that. If he was to fight them he needed to fight them in his current form. Since fighting as his past self was not going to help him in the future.

Once he was done killing every single goblin in the area he felt his mana capacity had increased but only a tiny bit. Aside from that, he was also able to save the human women that were kidnapped by the goblins.

For the women that were kept alive for breeding purposes and had lost the will to live, Ren decided to ease their pain by giving them a merciful trip to the afterlife. Those who wanted to live and still had light in their eyes were guided back to town.

Once that was done Ren headed to the next area. He needed to kill as many living beings as possible the stronger the better. Only in that way can he increase his mana and be able to match his past incarnations. 

Usually, it didn't matter if you had lesser mana since that wasn't all you needed to win a fight. If you had better technique it was also possible to win. There were also other factors in gaining victory, the terrain, the condition of each combatant, luck, and many more. A good example of that was the story of a master swordsman who fought a novice of the sword and died. The master swordsman was obviously better than the novice but due to a rock that was in his path he tripped and fell onto the sword of the novice. 

Still, no matter what factor he looked at, Ren's past incarnations were better than him. There was no chance for luck to play a part in their fight since they would be fighting in their soul realm. They also basically have the same level of luck. So it all boiled down to skill and power. 

Each incarnation was considered the strongest of their generation, which means they have the skill to back that title up. So Ren's only hope in victory is if he somehow gains better technique or he's able to increase his strength. Seeing as he had no time to slowly increase his strength with normal ways, Ren decided to use a different way.. The fastest way he knew that could potentially increase his strength dramatically was to use the death scythe's ability to increase his mana for every living being his killed using the scythe.