975 b. N. (before Nazarick)
25 years passed since Ainz arrived in the new world. Many things happened in these years. Ainz had faced some challenges, however, he came out victorious. Dragon Lords that sensed the power from the shock wave came to see what the cause was. But were easily defeated by Ainz Ooal Gown. The village near the tower also had some uninvited visitors. But with the Dark Knights of Ainz the intruders could be easily killed.
The previous Village Chief had died and Dain became the new Chief with the support of his little sister Leena. These were the children that Ainz saved when he first appeared in the village. Both had their amulets at all time, which were a gift from their savior. The compass that points to the Eternal Tower was in their possession as well, and they would look every day after it not to lose it.
Miriel, the slime, lived her life near a small city that would once become the capital of Re-Estize. It was a small hut that was her home for the last 25 years. She learned many skills in that time. Like how to use a sword or bow. She could use magic, but preferred not to. She heard from the people in the city that the Dragon Lords would hunt any being that could rival their own strength, and so choose not to get any attention from them. Living her life, but still not knowing that she was observed with curiosity.
Ainz was able to harvest the powers of some Dragon Lords that had come to fight him. Their corpses provided him with the ability to perform Wild Magic. A magic system native to this world. The use of souls was something he was capable of before, besides with wild magic, he could strengthen the power of his spells even more. He also got further information about the Dragon Emperor and his powers. For now, Ainz put him in the category of a World Enemy and a possible threat to him.
These years, he tried to find a way to get a body of flesh without using a [Ring of High Tier Illusion] that would make him a body that could even be touched. However, Ainz didn't want an illusion. He wanted the real deal. Therefore, with Wild Magic and Tier Magic, he was able to create a new spell. The 10th Tier spell [Doppelganger Wish] would transform the caster into the desired form without having to be a Doppelganger themselves. Ainz also made an even greater spell variant of it called [Doppelganger Dream] that would not only transform the caster into the desired body but also get all the settings of it. For example, Ainz could transform into a human with [Doppelganger Dream] and lose all the weaknesses and strengths of the undead. This could be edited so that he can keep his natural immunities and his emotional suppressor. Ainz figured the spell to be of the 12th Tier or even higher because its effect was way overpowered. Despite that, the spell would drain 4x times more mana than the 10th Tier variant. Both spells would drain mana for the duration of their effect until the caster dispels them.
Ainz chooses his second appearance to be of a High Elf Mage with long silver hair, pale skin, and red eyes. He would wear a majestic dark blue magician's robe with it. He would use this form mostly for visitors or when he was traveling to not scare someone with his undead appearance.
The name of the Immortal Sorcerer slowly spread over the land because of the tales the villagers would tell other travelers. And if they didn't believe them, they would just show the tower to them. This was not exactly what Ainz wanted the villager to do. But it gave him some fame in the world that he could use some time.
At some place in a gigantic cave, there was a black scaled dragon, feeding on a river of negative energy. Some say negative energy gives many abilities that are considered unnatural. But Onner Zozzontei didn't care about unnatural things and the list of side effects. He had to gather strength to claim the power that showed itself to him 25 years earlier. And what way to become more powerful than to fall to the dark side and accept the darkness? He fed on the negative energy every day, making him less dragon and more a manifestation of negative energy, but in a dragon form. His scales were long consumed by the dark liquid that surrounded his body, replacing them with the dragon lord's new skin made of darkness. No longer was he the Black Dragon Lord, but the Void Eater Onner Zozzontei. His memory was to a certain extent intact, and even with his last will, he consumed more of the negative energy. If he continues, he will become a mindless beast that only lusts for energy.
Onner found the mysterious source of negative energy by accident. He had to hide by a few Dragon Lords that were sent by his father to kill what was left of him. Yet, luck granted him his wish for more strength and showed him the way to the Legendary River of Darkness, which was at this point in time a myth. His thirst couldn't resist, so he fed and fed on the negative energy, giving him more power for the loss of his mind.
The Dragon Emperor thought his bastard son had finally died from an embarrassing death. His plans to kill the Dragon Lord of Old went down because the dragon was nowhere to be found. It most likely hid at some place so the Dragon Emperor can't reach the last of the draconic rings.
But Ainz knew where the Dragon Lord of Old went and wanted to pay the dragon a visit. He had an interest in the item he was protecting. Ainz understood why nobody faced the dragon lord. His power was rather obvious. Even when it didn't sense Ainz´s divination spells, its power in destruction was none to one. It was easy on the level of a World Enemy because it possessed a World Item that grants it immense resistance against magic, which puts Ainz at a disadvantage.
But Ainz just had a counterpart to the dragon's world item. His famous red orb was a world item that only belonged to Ainz and nobody else. It couldn't be taken from him in any way. The world item boosts damage dealt to dragons based on how long it was with Ainz. For example, in a thousand years, he could kill a dragon with ease because the world items builds strength over time.
Currently, in the throne room, Ainz was preparing for a quick visit to the dragon lord. It was currently resting in an enormous crater on top of a mountain. He was confident that he could defeat the dragon on his own. And if the situation gets out of control, he could summon an additional high-tier summon to aid him. Two Dark Knights would serve as bodyguards for the quick trip.
"Prepare to face a World Enemy, Dark Knights. If he decides to attack, protect me at all costs and distract him further for me to cast." Ainz ordered his Dark Knights.
The two responded in unison. "Yes, O Supreme One."
Ainz opened a [Gate] to the mountaintop and entered with his guards. He was greeted by a strong wind and a clear sky. But the most stunning was the massive dragon resting in the middle of the crater. It was easily 6x times larger than any regular Dragon Lord. It didn't possess any legs, although wings and a long tail were all covered by brown-golden scales. Furthermore, it towered with ease over 50 meters in height and double in length. Ainz could guess that this was a Dragon Lord, however, it didn't have the traditional four legs, a tail, and two wings. "Maybe it is a subspecies or even the ancestor of the normal Dragon Lords. He is called The Dragon Lord of Old for some reason." Ainz would have to study this later because he had a big problem before him.
The massive dragon started to move and slowly raised his head towards Momonga and his bodyguards. It opened its yellow eyes to investigate the intruders.
Now, before, Ainz was a colossal dragon looking at him. Its head even made a shadow above the whole crater. The enormous height was starting to get even more visible as it made a proper pose. It opened its mouth as if to say something.
"Welcome, visitors."