Stage name Xi Heon, he is a vocalist for the K-pop boy band MYTEEN. The group debuted in July of 2017 with a mini album called MYTEEN GO!
His group MYTEEN formed in 2016. Their first single, "Bones Are You," was made in collaboration with Li Minhe.
He became a close friend of MJ from the band Astro.
He was born in Bundang, South Korea
He and Kim Sang Jin were two of the original members of the K-pop group MYTEEN.