MTL - Little Mermaid Dressed As a Scientist - Chapter 65

An ordinary young man reincarnates as Adrian, the eldest son of a once-prominent noble family now living out in boonies of the kingdom. Watch as Adrian embarks on a tantalizing journey, to support his graceful and caring mother and feisty older sister, as a man should, with his seduction system.

The doomsday fell upon the earth when a dragon coffin sealed under a snow mountain for ages shifted, and the civilization of gods and devils began. The whole universe turned into a fantastic new world where everyone could rise to the top through cultivation. A lucky young boy seized the opportunity, and started his journey to be an overlord in cultivation.

- Description from Novelupdates

People called him a genius—but Agares never believed it.Tired of expectations, he abandoned everything to live an ordinary life, working just to survive in a cruel world.But fate had other plans.A sudden transmigration took Agares into a world of swords and sorcery—a land ravaged by demons, ruled by power, and merciless to the weak.To his shock, he awakens as one of the Chosen Heroes. Sounds like a dream come true?Wrong.“That's a cursed job!”“He's no hero—he's a demon in disguise!”“Kill him! For the sake of the world!”[DING! Congratulations, you have obtained a Job.][Name: Agares][Job: Saber]Hunted by the empire he was meant to protect, feared for the power he never asked for, Agares finds himself branded a threat to humanity. All because of a job he didn’t choose.Just as the noose tightens, a red-eyed woman named Liel offers him a different path:“You were born to be more than their hero.”“The empire betrayed you. Humanity rejected you. Even nature turns away.”“Why not embrace what they fear —and become the successor of the Demon Emperor?”Now, Agares has a choice: run, or rise.This is the beginning of his war.A war not just for survival —but for vengeance.

“I will have my vengeance, in this life, or the next!”Albedo died alone and depressed and was reborn in a Novel he had been reading. However, instead of becoming the Protagonist or Antagonist, he becomes Albedo Neverwinter, an Extra he couldn't even recall from the Novel.However, the cruelty of life didn't change even after rebirth, and his new family was ripped away from him, leaving him with nothing but scars as reminders of the gruesome fate his family faced.Promising to get his revenge, watch as Albedo, alongside his System, his tactical mind and scarce but valuable future knowledge, rises up the ranks and ascends the pyramid of power.[ OP MC, System, Harem, Romance ][ Yeah there will be Smut, but it won't dominate the Novel ]