This drama takes the "older woman/ younger man" trope to a new level. The young ML marries a middle-aged woman and, after her death in a car accident, moves on to her daughter, the FL, who is also significantly older than himself. It's all in the family... In fact, their relationship starts by calling each other father and daughter.
The FL is not particularly likeable as a character, and neither are her boyfriend - who's an idiot and a cheater, her colleague - the typical scheming woman etc.
I'm dropping this before it becomes cringier.