Never Mess with a Supporting Character (Quick Transmigration)

"Who says a cannon-fodder character or a female supporting character can't grow stronger? Does that even sound human?" the System grumbled. "We're done with this crappy world. Logging out. Later!" The cannon-fodder character or female supporting character flipped it off and took off. At this point, the System came online. "My dear daughter, just marry him. Your brother treats you so well. What's wrong with buying him a house?" "You want to sell me off to buy your son a house? Who does he think he is? If you want me to marry someone, you'd better ask my wife first!" The rotten parents: (╯°□°)╯︵ ┻━┻ "My dear daughter, you've already been ruined by that peasant woman anyway. Give your engagement to your younger sister. After all, your sister's the key to the Marquis household's future glory!" "Sure. Since you love that daughter of yours so much and despise me so much, I'll move into the princess's residence right now. From now on, you're not my mother. Farewell, Madam Marquis!" Seeing the princess, whose status outranked her own husband's, the younger sister clenched her fists, itching to hit someone! The task-takers, determined to live as protagonists instead of supporting characters, all declared: Kick up your feet and enjoy yourself. That's what matters most. "There's no way I'm letting myself be wronged and turned into a pitiful little thing!" A few notes: 1: One couple per world! 2: After entering the paid chapters, six chapters a day, updated daily. Theme: Bring light to drive away the darkness. My life is mine to control.