Singer Choi Siwon poses at a brand photo call held in Seongsu-dong, SeongSeongdong District, Seoul on the afternoon of the 19th.
The event was attended by Kang Daniel, Black Pink Index, El, Shin Min-a and Sung-hoon.
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