Kwon Yu-jin (Korean: 권유진), known professionally as Hayun (Korean: 하윤) is a South Korean dancer and BJ under HW Entertainment. She is a member of the girl group GIRL CRUSH, a former member of the girl group BaBa and a pre-debut member of the female duo BLAZE. She has won several awards for her dancing skills and her specialties are pole dancing and hip-hop dancing. As of September 2024, Hayun has amassed 370,300 followers on TikTok and 13,900 subscribers on her YouTube platform.