After I Helped the Second Male Lead Rise to Power

[A seemingly naive, wolfish young man who plays the pig to eat the tiger VS a hot-tempered, no-nonsense tomboy who can’t stand wasted potential + an emotionless robot System] Gu Man, a minor actress who barely makes the call sheet, transmigrates into the script of the show in which she’s about to play the heroine. She becomes a greasy little bandit with a scruffy beard and no name. System: “Want a stunning face? Easy. Help the second male lead marry the heroine, become emperor, repel foreign enemies, quell internal unrest... unite the realm and bring peace to the land!” Gu Man: “...” This mission really is... simple and brutal! For the sake of this face, she’s going all in. Whether the second male lead is just there to make up the numbers or a total failure, even if he’s a lump of mud, she’ll prop him up. Who could’ve guessed... the second male lead really is a lump of mud... She has to do everything for him: Marry the heroine: “I’ve knocked her out and put her in your room. Hurry up and make it official!” Repel foreign enemies: “I stole the enemy’s defense plans. Send out the troops!” Quell internal unrest: “The leader of the rebels is my sworn brother. I’ve already persuaded him to surrender.” Become emperor: “I’ve got those old fossils’ families in my hands. Go ahead and take the throne!” But in the end, the sweet little puppy Gu Man raised from scratch turned into a treacherous wolf who played the pig to eat the tiger... The man: “The realm is mine, and I’m yours.” System: “I object...”