A gif of K-Pop girl group "STAYC" member Sieun, who appeared in the behind-the-scenes video of singer IU's activities, has been posted on an online community in Korea, drawing attention from netizens.

Netizens who saw Sieun's photo of her crying after meeting her favorite senior (sunbaenim in Korean) IU responded by saying, "Sieun is famous as an IU fan," "I think I'm going to cry too," and "Senior IU who keeps making juniors cry."

Park Si Eun, better known as Sieun, is a K-Pop singer and actress currently under High Up Entertainment. She is a member of the girl group STAYC.