Global Killing: Awakening SSS-level Talent at the Beginning - Chapter 25:

A chilling air swept across the desert as a figure in a black cloak and obsidian crown walked toward the advancing army of House Elyria.With a raise of his hand, the sun turned black, plunging the battlefield into darkness. The wind ripped away the sand, revealing an ocean of skulls, and from it, thousands of undead surged, surrounding the army.Blood spilled, and with each death, the army grew—undead rising even before their bodies hit the ground. The figure stepped onto the shoulder of a massive giant, its molten eyes burning as it crushed entire squads with a single swing.As the black sun set, only the general remained. Kneeling, he glared.“You think this will go unanswered? House Elyria is one of the strongest forces on the continent!”The figure smirked. “Your House will answer soon enough. I’ll be visiting it tonight.”With a wave, the undead surged, swallowing him whole.--After his death in an accident, Roye awakens in the midst of a dark sacrificial ritual, surrounded by hundreds of lifeless corpses inside the body of Roye Valdrin—a disowned noble, the forgotten younger brother of a ruthless villainess, and the discarded ex-fiancé of a destined heroine.Worse yet, he has transmigrated into the world of Valoria, a dark fantasy realm where humanity began reclaiming its place on the surface only eight hundred years ago, after living underground for millennia with no idea why they were forced to hide in the first place.A world where gods and ancient emperors still influence the living from their graves.A world where politics run amok.A world where evil hearts and questionable morality lurk beneath a beautiful facade.Could he even survive in such a brutal world?Core Bloodline Acquired—Special Inheritance Gained: Apostle of Death.(Rank- Unknown)Roye doesn’t know if he will survive, but he knows one thing: he’ll do whatever it takes. Messing with the plot, killing main characters—nothing is off-limits.If the world wants to destroy him, he’ll burn it down first.

In The Swordsman, I am Yue Buqun! In Legend of the Condor Heroes, I am Ouyang Feng! In Tianlong Babu, I am Ding Chunqiu! …In Datang Shuanglong, I am Shi Zhixuan! …I am me, a big villain boss who walks in the heavens!

 Swordsman, The Legend of the Condor Heroes, The Eight Parts of the Dragon, Little Li Feidao, The Legend of Double Dragons of the Tang Dynasty, Fengyun, Zhuxian, Yangshen, Shading the Sky, Perfect World, Eternal Life…

- Description from novelbuddy

When the average man is suddenly thrown into a video game as an extra, fated to die, they might first think to hide or run away. But not Luka. A man now inhabiting the body, he simply wants to survive - no matter the cost - even if it means he has to kill the main character!

agreed. He thought they might just talk, have a few drinks, and that nothing significant would happen. However, she invited him to a hotel, and they spent the night together.The next morning, she told him it was just a one-night stand and that they would probably never meet again. She said goodbye and left. Ronan also decided to treat it like that.The next day, at his college's hosting club, Ronan was given the responsibility of hosting that year's annual function, where they had invited a singer.When Ronan looked up at the singer, he was shocked—it was the same woman he had spent the night with. After checking her history and social media, he formed an impression of her. Every picture she posted was in revealing clothes, bikinis, or almost nude outfits.He concluded that she was just a promiscuous woman, likely driven by lust, and that she had probably chosen to spend the night with him simply because she found him handsome.Understanding this, Ronan decided to focus on his work. That morning, she had made it clear that it was just a one-night stand and nothing more. He would treat it exactly that way and carry out his responsibilities.Protagonist has System---No NTRIt's Harem, with many girls but The Singer is Main Heroine.