New Sun (뉴썬) was a South Korean singer, rapper, songwriter & maknae of the K-Pop girl group “SONAMOO”.

On September 11th, 2021, she confirmed that she has departed from the girl group and TS Entertainment.

On November 1st, 2021, she signed a contract with AnB Group. She will be promoting as an actress under her birth name ‘Choi Yoonsun’ (최윤선).