[5] Later that year, Jang participated in the Mnet reality-survival program Idol School to form a new girl group.

[7] On November 29, Jang, together with Fromis 9, performed their pre-debut single titled "Glass Shoes" at the 2017 Mnet Asian Music Awards in Japan.

[9][10][11] On May 10, it was confirmed that Jang would be representing Stone Music Entertainment alongside Jo Yu-ri and 2 other contestants in Produce 48.

[14] On May 10, 2019, Jang made her acting debut and starred in the web drama Dating Class as Kang Ji-young.

[18][19] She starred in the SBS television series Cheer Up in the second half of 2022, making it her first project since leaving the group.