This title suggests a dramatic family betrayal where the protagonist’s sister steals her fiancé, believing she has won both love and social status. But the twist is that the family fortune, which everyone assumes belongs to the parents or will be inherited later, has already been legally transferred to the protagonist. The strongest drama comes from a public engagement reveal where the sister and fiancé humiliate her, only for the protagonist to calmly expose that they betrayed the one person who legally controls everything