"Promise now, cherish it preciously. We will grow into your idols! Hello, I'm Seoyeon! Lee Seoyeon (이서연) is the Main Rapper, Lead Vocalist, and Lead Dancer of the Girl Group Fromis_9 under Off The Record Entertainment. Before debuting, Seoyeon used to be a YG Entertainment Trainee. In 2017, Seoyeon appeared and competed in the survival show "Idol School" where she ranked 7th with 61,083 votes, earning her a spot in the group.