The Vicious Supporting Female Character Leaves and Becomes a Mary Sue Heroine

[Transmigrate Into a Book + Showbiz + Everyone's Favorite Mary Sue] I transmigrated into a CEO romance novel as the vicious female side character, but who says I have to follow the original plot? Whoever wants to play this crazy, vicious female character can have her. I'm not doing it. So my "vicious female character" made a spirited exit, and I devoted myself to building a career. Just as my career was taking off, I suddenly realized I'd somehow stumbled into another book. Great, then I'll be the protagonist of my own story! But there's one little problem: in this book, I seem to have a Mary Sue setup. I'm not just a Mary Sue, I've practically become a "seductress"! Good heavens, there are so many men. Who am I supposed to choose? But your big sis here just wants to focus on her career!