Haven't Ryuji and Chaeryeong graduated from the same school in what department have Ryujin debart. I don't say that she would not be a good Actor but I'm surprised because she never shows any interest in Acting for me.
Ryujin graduated from the dance department. And it is common that sometimes Chaer does not say this kind of thing because I realized that she always puts the group above the rest, I am not saying that the others do not do it as well, but it is normal for Chaeryeong to think about others.