Well, it's not really about age. It's more about the characters' feelings and circumstances. Some manhwas might challenge the idea of age and focus on true emotions instead.
The 'Am I A Daughter' manhwa might be a story about a character's self-discovery and exploration of her identity. But it could vary depending on the specific plot and themes.
There could be a mentor - like figure in the novel. Maybe a business tycoon or an old friend who helps the main character navigate the world of business and wealth - building after the divorce. And of course, there might be antagonists, such as rivals in business or people who try to take advantage of the main character during their journey to becoming a billionaire.