A/N: This story takes place after my first Undertale story, Darknesstale. It contains references to Darknesstale that you will not understand if you have not read it. Be prepared for spoilers.
Edward was an ordinary man, or so he thought. He had a rather boring life. He hoped that moving to the world's only predominantly monster community, New New Home, would bring some excitement into his life, but it eventually wore off. A little over a year after the destruction of the magical barrier trapping monsters underground, Edward saw something on TV that would change his life.
Frisk, the human girl who had destroyed the barrier, had defeated the Great Dragon Clan, a monster cult dedicated to resurrecting Zeregoth, the Father of all Monsters, and exacting revenge against humanity for imprisoning monsters underground. Zeregoth was a god-like monster from whom all others had descended, and he normally took the form of a dragon. To defeat them, Frisk enlisted the help of the scientist W.D. Gaster. She had even used Gaster's time machine to go back in time and save the Dreemurr children, Asriel and Chara. Together, they had restored the monster god's sanity and ended his quest for vengeance. But something about this human girl and this dragon god was familiar to him.
Suddenly, all of his memories came flooding back. He was the reincarnation of the human king Esmond the Great, who lived before the war that sealed monsters underground. Frisk had used Gaster's time machine to travel to his era, and he had taught her Determination magic. She had been there with him when Zeregoth was defeated and banished into the void. Then, he remembered the stories of how his empire had fallen into decline and eventually collapsed after his death because of the incompetence of his successors. He remembered that his empire had been split into seven smaller kingdoms, and how the combined forces of those kingdoms had sealed the monsters underground. He resented them for allowing his empire to decay, and for not killing all the monsters when they had the chance.
Most of all, he resented this human named Frisk for freeing the monsters. If he had known that she would free the monsters, he would have killed her when he had the chance. The Great Dragon Clan and their god had nearly destroyed humanity, and he blamed Frisk for allowing them to threaten the human race. But now that he had his memories back, he remembered his Determination magic techniques. Esmond also had a soul of Determination. Though it was less powerful than Frisk's and could not reset, he could still use the magic techniques to take revenge against the monsters and their human ambassador.
"I will rebuild my empire," he thought to himself, "and the monsters will pay for their crimes against humanity. The traitorous humans will also pay, starting with Frisk. For I am King Esmond, the greatest man who ever lived!"
A/N: Sorry for the short chapter. This one is an introduction, and the others will be longer.