Responses
Yes, you can read it on Ridibooks.
So basically what happened is that Dan Yi decides to date Ban Yeo Dan (Ban Yeo Ryung's older brother), since he has these pursuers (pretty much obsessive fangirls) tailing him. By dating, I'm assuming that they would be able to lure out the pursuers and...deal with them, I guess. Oh, btw, Dan Yi is doing this willingly, as Yeo Dan showed that he was quite against it, because he doesn't want to burden her or for her to get hurt during the whole ordeal-thing.
Even though he doesn't appear as much, a part of me ship Dan-I with the big brother.