He has contributed to various original soundtracks for K-dramas, including Hometown Cha-Cha-Cha, Love in Contract, and the television series The Midnight Studio.

In the same year, he released a cover of Justin Bieber's song "Ghost" as part of Stray Kids' SKZ-Record series.

[16] On December 21, Seungmin's solo song "Stars and Raindrops" was released and included as part of the compilation album SKZ-Replay.

[21] On March 15, 2024, Seungmin released an original soundtrack "Phobia" for Web novel and Webtoon titled I'm the Queen in this Life.

[23] On March 18, Seungmin was selected as the first pitch for a special game between Team Korea and the LA Dodgers as part of the MLB World Tour Seoul Series 2024 with Coupang Play.

[25] On March 1, 2024, Seungmin made his fashion week debut attending the Loewe Fall Winter 2024 Women's Show held in Paris.

[28] In September 2023, Seungmin, along with fellow Stray Kids members Lee Know and Hyunjin, was involved in a car accident that led to their absence from the Global Citizen Festival performance.