It's the wedding reception of a married couple. The bride and groom are in the middle of the reception, and the groom's sister, who is the bride's older brother, is in the front row. She introduces herself as "Choi mina" , which means "older sister" in Korean. She tells the groom that she's his older sister, and that she and his younger brother, "namhyun," are both at the same high school. The groom congratulates the bride on her wedding, and she thanks him for coming. She says that after graduating, she was worried that they'd become awkward, but now that she looks at him, she feels a lot better. She asks the groom if he's allowed to stay at the party, and he says that he is. She then asks him if he wants to argue with him in front of the other guests. He says that it was at his company, which is where they often do business. He then asks her why she would mention namhyun's name because he is the younger brother of sihyun, the older sister. She explains that she made a mistake, but she doesn't tell namhyun that she said this, because she thinks he'd already heard about it.