The 23-year-old singer used to be a Big Hit Entertainment trainee and worked as a composer for singer Suran, BTS, and more. He participated in writing BTS' tracks "Lost", "Awake", and "Not Today".

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On February 7, June attended Planetarium Records showcase in Seoul. Along with June, his labelmates Kei.G, Villian, Gaho, Moti, and Jung Jin Woo were also in attendance. 

At the event, June shared, "I was in Big Hit Entertainment as a trainee so I got to know BTS. I keep in contact with SUGA sunbaenim. We go out to eat and sometimes have drinks together." He added, "He recently contacted me and congratulated me on the release of the new album."