Lee Sang-hyeok (이상혁; born October 22, 2003), known professionally as Riwoo (리우), is a South Korean singer and dancer under KOZ Entertainment. He is a member of the boy group BOYNEXTDOOR.
Birthday: October 22, 2003
May 30, 2023
December 19, 2023
July 23, 2018
July 07, 2023
February 22, 2022