Park Arin is Parki Jiwan's fiance, and they are both Jihoon and Yuna's older siblings. Quite annoying, because ten minutes before their wedding party started, Park Jiyoon came. If only the woman named Jiyoon wasn't Jiwan's lover who was heavily pregnant, the party would continue. But sadly, this time things were different.
With the knife in hand as a threat, Jiyoon screamed hysterically in the bridal room facing the entire Jiwan family and her bride – Park Arin. She threatens to kill herself and screams if Jiwan insists on staying married.
In contrast to the two brides who were very panicked and the two families who were frantic by Jiyoon's behavior, each of the two couples' younger siblings sat there without thinking anything. Jihoon was too indifferent and Yuna— She had known this for a long time. So yeah... just fine.