[3][4] She attended Hanlim Multi Art School, joining the Dance Practice Department, alongside groupmate Chaeryeong, and graduated on February 7, 2020.

She also featured in BTS' "Love Yourself" highlight reel alongside groupmate Yuna and appeared in the political crime drama film, The King.

[9] Ryujin, along with fellow Itzy member Yeji, participated in a remix of Bebe Rexha's 2022 single "Break My Heart Myself", released on July 29, 2022.

[10][11] On April 12, 2022, Ryujin donated ₩50 million (US$38,716.27) to The Promise, a corporation that helps the victims of the forest fire that happened on the east coast of Gangwon-do.

[12] On February 14, 2023, Ryujin sent to The Promise another donation of ₩50 million (US$38,294.74) in support of those affected by the earthquakes in Turkey and Syria.