B Of You (B.O.Y) (Hangul: ë¹„ì˜¤ë¸Œìœ ; was a duo formed by former MYTEEN members Song Yuvin and Kim Kookheon. As of April 30 2021 they have disbanded. Song Yuvin and Kim Kookheon participated in the fourth edition of the Produce x 101 survival reality show, Yuvin went to the final and ranked #16 and Kookheon ranked #21 in the semi-final. • Song Yu-bin (Hangul: ì†¡ìœ ë¹ˆ, born April 28, 1998), commonly referred to as Song Yuvin, is a South Korean singer and actor. Read more on Last.fm