I.O.I

I.O.I (아이오아이) was a project group formed through the Mnet reality show Produce 101. The group consisted of 11 members: Jeon Somi, Kim Sejeong, Choi Yoojung, Kim Chungha, Kim Sohye, Zhou Jieqiong, Jung Chaeyeon, Kim Doyeon, Kang Mina, Lim Nayoung, and Yoo Yeonjung. They debuted on May 4, 2016, with the title track "Dream Girls" from their first mini-album, Chrysalis. I.O.I officially disbanded on January 31, 2017, after releasing their final single, "Downpour."