Born in Seoul, South Korea on April 17, 2001, 신류진 (Shin Ryu-Jin) is a member of South Korean girl group ITZY, which debuted under the talent agency JYP Entertainment in 2019.

In 2014, Ryujin was noticed by a JYP scout at a GOT7 concert. The following year, once giving the scout her number on request, Ryujin officially joined JYP as a trainee.

After successfully becoming a trainee, Ryujin appeared on the boy group survival show Stray Kids in 2017. During that same year, she was also featured in BTS’ Love Yourself highlight reel, alongside members j-hope and Jimin. Moreover, Ryujin also participated in JTBC’s MIXNINE, where she ranked first place in the finale for the girls team. Ultimately, she could not debut in 2018 as the boys team won against the girls team, which thus led to her elimination.

On January 20, 2019, it was announced that Ryujin would be joining JYP’s new girl group. After four years of overall training, Ryujin debuted as a member of ITZY on February 12 of the same year.