Regarding the marvelous discussion going on... I'd love to point out that in a yuri manga, comic, game, fanfiction, mawha, anime, etc... is SO cliché for the two girls to end up together, and it is even worse when they're the main characters. Also, I'm not taking sides, I'm just saying...
And... I'd like to see how the ex arc is going to develop. I don't remenber why they broke up, but I told a friend and she said she was sure he had to go to the military. Yet, I think they broke up because he cheated on NoRae with someone, and since SeolA seems to know him from somewhere... Yeah, well.