This is an interesting manhwa, beautiful characters and all that butttt its so confusing.....

This is an interesting manhwa, beautiful characters and all that butttt its so confusing...i legit dont know what going on most of the time. Is she a mir or not? What significance does she have to the mirs? Why do they get excited or affectionate when she is involved? Whats up with her cousin tho, does he like her in that way? (〜￣△￣)〜