Hajin (하진) is a South Korean singer. She is a member of the upcoming girl group YULiONi. She is also a former member of Baby Boo, Leader'S, their sub-unit Leader'S T and a pre-debut girl group SOME.
2011–2012: Leader'S and Leader'S T
Yesol originally debuted as the leader of the eight-member girl group Leader'S, with the group's first digital single "Please" on March 22, 2011.
In October 2011, the group's company announced that Leader'S has been reorganized into a twenty-four-member girl group with three sub units, Yesol became the leader of the Leader'S T unit.
It's presumed that she left the group sometime in 2012; at the beginning of the group's first hiatus.
2018: Baby Boo
In May of 2018, Baby Boo introduced two new members after Shine had left the group: Jelly and Hajin. Both didn't stay very long. A couple of weeks before Baby Boo introduced their new line-up (in November), they left the group.
In April of 2019, Dayul teased two new members for the group on her Instagram account. Not long after, the members were revealed to be Hajin and Roori.