The Heroine Is Pregnant, So What Does That Have to Do with Me, the Villain?

[The fated big bad + the Drift King of Akina + no NTR, no angst, just pure satisfaction] Lu Chen transmigrates into a fantasy novel and starts out with every advantage. He has Azure Dragon blood, a powerful family, a handsome face, and the sect's favor. It all seems perfect. But when his opponent shouts, “Thirty years east of the river, thirty years west of the river. Never look down on a poor young man,” Lu Chen's heart sinks. Damn it, I'm the villain. Just as Lu Chen is reeling, his System awakens. His opponent has a mysterious old master at his side, a golden finger, and all the classic catchphrases. I have a System. Is the fated protagonist really that impressive? Then I'll be the fated big bad. The opportunities the protagonist works so hard to obtain? They're mine. His childhood sweetheart? Sorry, I'm borrowing her womb. The moment Lu Chen chooses to become the fated big bad, the entire fantasy world changes its tune. He rises to prominence in the sect and strikes without mercy in secret realms. Even the sword immortal who once froze three thousand minor worlds with a single sword is now held by the chin as he says, “Now it's time to settle our score...” From an ugly toad everyone looked down on to the Eternal Demon Lord, Lu Chen follows the villain's script and slaughters his way through the three realms! The goddess of the Nine Heavens offers herself to him, and the Netherworld Ghost Emperor guards reincarnation on his behalf. The Myriad Worlds are destined to grovel at his feet…