My Gu Can Cultivate on Their Own - Chapter 227 - Kill  

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

“Wife! Come here!”“No!”She always thought he was aloof, but after getting the marriage certificate, the aloof military king immediately transformed into a wife-doting maniac.The husband indulges his wife in countless ways, Lily Turner finds it extremely exhausting, her protests go unheard, her pleas are ineffective, she wants to escape, but whenever she tries to climb the wall, it rises higher, leaving her in tears!When asked about the reason for his limitless indulgence, the young master responds astonishingly, “The one who dared to trick me into marriage, it's only her!”The woman beside him rolls her eyes at him: she is the one who got deceived, okay?

If I fail to seduce all the heroines of this s*xy game, I’ll die.

Humanity was living peacefully on Earth for millions and millions of years until the day unknown monsters from beyond space invaded them.

When humans were about to disappear, some people with abilities came out to the light and shared their knowledge and powers with the world, and together, they managed to push back the invaders during a terrible war that had lasted for years.

This war had created many orphans, and among them, Kye had lost everything, even his parents. And the only thing he received from their death was a pale-looking necklace.

However, once the necklace finally activated, a system was given to him, and his life changed completely.

The system gave him quests to do, and Kye complied. He was getting stronger every time he achieved them, until the day it gave him a weird quest.

[You have one day to kill the one who had sinned. If you do not kill, you will die.]