Her grandfather, Shin Seong-sik, is a painter and one of the founding members of the South Korean painting collective Mukrimhoe.
[5] In 2020, Shin Seul-ki was crowned as the 90th Miss Chunhyang, the reputable traditional Korean beauty pageant in Namwon, North Jeolla Province.
[8] On April 17, 2023, Big Smile Entertainment announced that Shin has signed an exclusive contract with the talent agency.
[10][11][12][13] At the production press conference, Shin shared that during audition, she realized she may have been cast for the role of Do-Ah when the director asked her to try on a pair of glasses.
[16] On December 18, 2024, it is announced that Shin will be joining in the upcoming KBS2 family weekend drama, For Eagle Brothers as Dokgo Se-ri.