[2] In April 2012, AB Entertainment announced that three original members Yuji, Dami, and Haeryeong would leave the girl group EXID.

[12] In February 2015, Solji participated in a singing competition program, MBC's King of Mask Singer, for their pilot episode, in which she won the title.

[citation needed] On February 8, 2016, Solji, as well as fellow vocal trainer and friend, Doo Jin-Soo, were invited to join MBC's Duet Song Festival for the pilot episode of their Lunar New Year Special.

On December 21, 2016, Solji was diagnosed with hyperthyroidism, putting her career on hold, while the other four members of EXID continued their schedules in the year-end awards season.

[14] She made a surprise appearance in EXID's Asia Tour in Seoul on 13 August 2017, but she was still not medically cleared to return to group activities.

[15] She, however, participated in recording for the group's fourth mini-album, Full Moon, despite not being involved in its promotion and live performances.

[citation needed] On February 5, 2020, Solji left Banana Culture although she remains as a member of EXID in the future activities.

[14][17] She also enrolled in Kyung Hee Cyber University to study the practical music program during her hiatus time (2017).