There Is A Huge Problem With My Achievement System - Chapter 15

Legend says, that there is a great demon, who is the human kind’s public enemy. He is the galaxy federations’ nightmare as he wanted to conquer the whole universe. On the first day, he completely took out the human fleet, plunging them into disorder. On the second day, he declared that he will wipe out the whole federation. On the third day, he declared——that the hero who shot him in their previous battle must marry him, or else, he will destroy everything.

The galaxy federation president and the council members had a long meeting after that. They decided to dispatch a soldier, Wu Xing Yun, and marries him off to the arrogant demon. Wu Xing Yun was once a hero who fought for the nebula, and henceforth, he was tasked—— for the sake human race and the universe’s peace, to eliminate mistresses, settle his matters with the mother-in-law, and fix the man’s crooked ways.

Wu Xing Yun was very perplexed when he asked his commanding officer: “Sir, why did it have to be this way?”

Commanding Officer: “Soldier, bear in mind, that this mission of yours, is for the sake of the universe and mankind’s happiness. You must hold on to your husband, and fight other mistresses! Do you have the confidence to accomplish this task?”

Wu Xing Yun, stood straight, saluted, and instinctively replied: “Sir, yes sir! I will accomplish this task!”

- Description from Novelupdates

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.

Auren was the star of his generation. Graduated the combat school at the age of 12, mental fortitude was beyond his peers, and he was considered the talent of the Western State of Lysendral.It was for this reason that his awakening was greatly anticipated. Everyone was sure the star would receive a Divine Blessing from the Archon.And like others before him, be set on a definite journey to becoming the strongest Blessed in the history of the world.However, expectations were shattered when Auren awakened a Divine… Curse.“Such a phenomenon has never been heard of!”“How can a human awaken a curse! This is an abomination! Kill him! Sacrifice him to the archons!”In such a slight moment of appointment, Auren's entire life came crashing down.And he became a national criminal. Locked up and sentenced to death for having receiving a curse instead of a blessing.A 16 year old boy was ruthlessly killed by a guillotine and offered as a sacrifice to prevent doom… and the people relished in it.However, this was not the end for Auren.[Congratulations, you have died by execution],[Conditions have been met][You have challenged your first fester.][A requiem beckons onto you..][...Your resurrection awaits.]Having broken the shackles of death, Auren rises again to seek vengeance and destroy not just the nation that had killed him but tear down the very existence of the archons themselves.But is everything really as it seems?

Hypnosis, Time Stop, Eyes of Lust...Just why do I have these skills?!After almost dying, he was reborn as the demon king of lust.Since the world is against him, there was no reason for him to be a good person. Especially since the entire world was hunting him down in the first place.So he decided that he would destroy the world in his own way as the demon king.