Jin, the eldest member of the K-pop megastar BTS, brought joy to fans over the weekend with a two-day fan showcase, 'Jin 'Happy' Special Stage,' at Jangchung Arena in central Seoul. With the event also celebrating the release of his first solo album,

The upcoming Fallon appearance will come six years after BTS made its full-band debut on Fallon’s show. In 2018, the group — which is also comprised of SUGA, J-Hope, RM, Jimin, V and Jung Kook — performed Billboard Hot 100 No. 11 hit “Idol” and “I’m Fine,” as well as tried out that year’s “Fortnite” dance trend.

Two years ago, Jin of BTS released “ The Astronaut .” He sang of finding a love who became his universe, and in the music video, ran all the way home to them. With this promise to fans that a glittering cosmos awaited them for all eternity, he enlisted for his mandatory military service as a South Korean citizen.

The video subtly nods to Jin's BTS roots, with fans noting the clever use of his birth date and the number 7—representing the seven BTS members—in the car's number plate in the teaser.

BTS’s Jin revealed the behind-the-scenes process of working on his first solo album “Happy” through a written Q&A released by his agency BigHit Music on Saturday.