Hello! I am searching for a Korean(?) Drama and it's been already a few years. I remember that the main character is a woman and I think she wants to be a fashion designer (I hope I didn't mix that with another drama). I remember her brother and I believe he was a doctor (The brother is the key figure to the drama I am searching, every other detail can be mixed up.) Her parents are not rich and treated him always better than her and later on, she finds out, that they treat him better, because he is not their biological son. Before that, she always thought, that she wasn't their biological child. I also think, that the brother secretly liked his sister and kept photos hidden from her in his room on the wall behind something. If I am correct about the fashion designer's dream of her, I think the main lead was someone higher in the company that she starts to work in.
It's not "Love & Secret", "Baby-faced Beauty", "Cheongdamdong Alice", "Her Legend" or "Come! Jang Bo Ri"
I can't get these scenes with the brother out of my mind. Like, how her parents gave him the better food or how he never let anyone into his room, only later on he allowed it her sometimes.
I clearly remember, that his room was the first on the left side of the entrance.
I really appreciate every help!