I Won Five Million, So How Can I Flaunt My Wealth Without a Job?

[Winning the lottery and turning her life around + rich-girl secret identity + ridiculous jokes and memes + reforming the workplace + punching patriarchy + kicking out a mooching brother + tearing into scumbag men] [After years of being enslaved, she finally snapped! She woke up.] After enduring workplace oppression and constantly fighting against her family of origin, she refused to become a doormat for her little brother... Then one day, the winning lottery ticket fell into her lap: five million. With money behind her, life became a game she could play however she wanted.

Note: There is no fixed male lead in this book. The men are all just passing through the heroine's life. Though she is constrained by her family of origin, she dares to fight back, love, and hate. She's straightforward when it comes to romance and a low-key little rich woman.