Group Super Junior member Choi Choi Siwon poses at the 2019 K World Festa closing photo wall event held at KSPODOME in Seoul, Songpa-gu, on the afternoon of 24 Days.
About Choi Siwon
Choi Si-won, known mononymously as Siwon, is a South Korean singer, songwriter, model, and actor known for his work as a member of South Korean boy group Super Junior.
 Wikipedia