Add Yahoo as a preferred source to see more of our stories on Google. BTS will appear on "The Tonight Show" March 25 and 26. File Photo by John Angelillo/UPI March 18 (UPI) --South Korean boy band BTS ...

Even after his massive solo success and a long list of standout moments on BTS songs, at age 28, Jeon Jung Kook hasn't yet quite figured out who he is. "I'm still forming my sense of self," he says.