Kim Seong Ri is a South Korean singer, dancer, and former member of K-BOYS (케이보이즈) and RAINZ (레인즈). He graduated from Miyang High School and later obtained an associate's degree in K-POP from Dong-Ah University.

He made his debut in August 2012 as part of K-BOYS under the stage name Seong Ri A. The group was not successful and stopped promoting after their first album, but NSB Korea (엔에스비코리아) never officially announced their disbandment.

In 2017, he participated in the singing survival show "Produce 101 Season 2" and finished in 47th place. However, after the show concluded, fans began petitioning MNet to create a project group with popular contestants outside of the Top 10. So, the Japanese agency KISS Entertainment (キッス・エンタテインメント) took over the fan request.

He re-debuted in October 2017 as RAINZ's leader and main vocalist with their first EP, "Sunshine". The group signed a one-year contract and officially disbanded in October 2018, when they concluded their last activities in Japan.

He returned to his agency, C2K Entertainment (C2K 엔터테인먼트) and began singing OSTs for several dramas. He made his debut as a solo artist in April 2019 with the single "First Love". He later switched to trot music and participated in a few trot singing competitions without much success.

He enlisted for his mandatory military service on November 27, 2023, and was discharged on May 26, 2025.

(Source: MyDramaList) Edit Biography