After Our Flash Marriage, My Billionaire Husband's Secret Identities Were Exposed

After her scumbag boyfriend cheats on her with her fake heiress sister, the real heiress heroine impulsively marries a "broke poor guy" she happens to meet. She has no idea he's actually the richest man in the world. As they keep their secret identities from each other, they repeatedly let them slip and team up to take down the scumbags.