“I got the opportunity to work with someone I like," Jin teased at BTS' "Yet to Come" concert.
'It’s been three years since we could scream at the top of our lungs for the boys,' one fan said at the show.
The two-hour show was livestreamed in partnership with Weverse.
The show was planned in support of Busan, South Korea's bid to host the 2030 World Expo.
The K-pop stars' latest mini-album brought in 62% of the vote.
YG Entertainment says the singer has faced "personal attacks" following the leak.