New Track Dear My Friend speaks about a person very close to BTS member Suga, the person in the song is revealed to have some problems with authorities as prison and detetion centers, as well as drug use. 

According to some sources Iron who was a korean rapper moslty known about his apperance in "Show Me The Money 3" and the rapper Kidoh from the Idol group Topp Dogg were arrested back in 2016 for the use of marijuana. After a year in 2017 Iron was arrested and sentenced for 1 year in prison after assaulting his then girlfriend.

Iron and Kidoh were under Big Hit Ent and were supposed to debut under the Bangtan name along with RM (Rap Monster), SUGA and J Hope.