[2] Seunghee was a regular name in various singing contests and reality shows, including KBS 1TV's Korea Sings (2007), where she won the Excellence Prize, SBS TV's Star King (2007), where she was known to the public as the "11-year-old Little BoA",[3] and Mnet's Superstar K 2 (2010), where she made it to the Super Week but did not make it to the top 11 finalists round.

[4] In July 2015, Seunghee made her acting debut in a web drama titled Loss:Time:Life.

[7] From November 2020 to January 2021, Seunghee starred in the sports variety show, Not Soccer or Baseball, alongside athletes Chan Ho Park and Lee Young-pyo.

[8] From February to May 2021, Seunghee together with Kim Hee-chul, Shindong, and Lee Sang-min, hosted Friends, a television program that follows the daily lives of its cast while also showing the emergence of their friendships and romance.

[9] In December 2022, Seunghee donated 20 million won by participating in the Million Angels Sharing event organized by the Korea Childhood Cancer Foundation to support children suffering from childhood cancer.