Behind the story of these two sisters who lived 18 years without knowing about each other until they met in a prep course and things didn't go well, there might be a mix of emotions, expectations, and unspoken family secrets. The sudden discovery of a long-lost sibling can bring up feelings of surprise, confusion, excitement, or even resentment, depending on the circumstances surrounding their separation. Unresolved issues within the family, different upbringings, contrasting personalities, or simply the shock of finding someone who shares your blood but is essentially a stranger can all contribute to a complex and sometimes challenging relationship between siblings who reunite later in life. It's a delicate balance between the joy of newfound connection and the struggle to navigate a bond that was never cultivated during childhood.