Park Ji-young, professionally known as Kahi, is a South Korean singer, dancer, and actress known for her work as a former leader of South Korean girl group After School. As of June 2012, Kahi graduated from After School and continued her career as a solo singer and actress with Pledis before her contract ended in January 2015.

Produce 48 is the third season of the South Korean reality competition series Produce 101. It was a large-scale project in which the public "produces" a girl group by voting for members out of a pool of 96 contestants from South Korea and Japan, as well as voting for the group's concept, name and debut single. The show was a collaboration between the Mnet series Produce 101 and the J-pop idol group AKB48. The winning 12 contestants, with no nationality caps, as voted only by Korean viewers, would promote as a group for two years and six months. The program itself is primarily in Korean, however staff and trainer instructions were translated onsite by interpreters. The show announced the final 12 members who made it into, as well as the official name of the group Iz*One during the finale on August 31, 2018.