[6] In mid-2017, Kim participated in the Produce 101 Season 2, a reality competition show designed to form a temporary boy group consisting of 11 members chosen by the public from 101 contestants.

[11] They released their debut single, Good Day on July 27 which included the title track and "I Just Do", a song that was co-produced by Kim.

[13] On March 15, 2018, he starred as a male lead in the music video for Lee Kang's song "In Vain (feat.

[16][17] On May 22, the group debuted with their EP, B:Complete which included "Shining Stars", a song that was co-produced by Kim.

[18] In early 2021, Kim starred as one of male lead in a web series called Fling at Convenience Store.