Singer–actress Kim Sejeong is officially making her long-awaited return to the music scene. On December 8, she unveiled the comeback poster and moving poster for her new single ‘Solar System,’ marking her first music release in two years and three months.
A Winter-Themed Return After Her First Studio Album
‘Solar System’ is Kim Sejeong’s first comeback since her 2023 full-length debut album Door, signaling a new winter-inspired emotional chapter. The comeback poster showcases a classic, atmospheric concept that hints at the song’s tone elegant, reflective, and seasonally warm.
Since her solo debut with ‘Flower Way’ in 2016, Kim Sejeong has built an impressive reputation as both a vocalist and a songwriter, earning No.1 positions on major Korean music charts from the start of her career.
An Artist Expanding Her Musical Narrative
Kim Sejeong has steadily shaped her identity as a singer-songwriter through consistent participation in writing and composing. From her first mini album Plant to the digital single Whale, and later her second mini album I’m, she continued widening her artistic range.
Her growth culminated in her first full album, where she contributed lyrics to every track — a milestone that reinforced her ability to tell stories through music. She has also gained recognition for her contributions to K-drama OSTs, beginning with The Legend of the Blue Sea’s “If Only,” followed by hits for The Uncanny Counter 1 & 2 (“Meet Again,” “Someday”), Crash Landing on You (“All My Days”), and Drunken Romance (“Two of Us”).
Active on Screen With More to Come
Kim Sejeong is currently starring in MBC’s drama The Moon Flows Over the River Again, where she plays the role of Park Dal. As she celebrates her 10th debut anniversary, she is also preparing for an extensive fan-concert tour titled ‘2026 Kim Sejeong Fan Concert: The Tenth Letter.’ The tour begins in Seoul in January and will span eight global cities, bringing her closer to fans worldwide.
Release Details
Kim Sejeong’s new single ‘Solar System’ will be released on December 17 at 6 p.m. KST across all major music platforms. With her signature emotional storytelling and winter charm, the comeback is expected to resonate deeply with listeners waiting for her return.