“병 (Dis-ease)” is a bright, old-school hip-hop song about disease of artists own profession and the feeling of uncertainty during the pandemic, but also shares the message of hope for the future.

During YouTube Live from the recording of BTS' work on the album, the group said that they want to write that one song that people will be able cheer along to, something raw, similar to “흥탄소년단 (Boyz with Fun)” or “We Are Bulletproof Pt. 1.”

The track parallels two different concepts. 병 directly translates to “disease,” however j-hope, who wrote the most of the track, have written the English title of this song as dis-ease. ‘Dis-’ is a prefix meaning opposite/not, thus changing the meaning of the word. Rather than just being about disease, the song is also about the opposite of ease, hence “disease,” or “uncomfortableness.”