If you watch vlives, Dayoung is basically born to be a celebrity. She knows how to speak, how to entertain, how to barge in the right time. The only difference is she doesnt know how to stop.... Yeonjung is similar to Dayoung, but she has her two sides. Yeoreum on the other hand, has a calm, demure, laid back character.
First time I saw Dayoung, my mind only have 1 word, Diva (and not in bad way). Like she knows how to demand attention from audience, she knows how to hype things up. There was this funny incident I remember that Dayoung said no one wants to hang out with her. But I guess the members’ energy just cannot match hers. Yeonjung, in another hand, blessed with loud voice, but her personality is not that ‘loud’. I feel that she has some boundaries. Our baby Yeoreum is just cutie who needs to put up with noisy Dayoung and affectionate Eunseo unnie. Just kidding, Dayoung actually said that Yeoreum is more generous towards her, like entertaining her, instead of ignoring her previously. I guess, being roommates brought them closer.