NCT Dream is the third sub-unit of the South Korean boy band, NCT, which specifically consists of teenagers in their teens. At first, this sub-unit had a graduation system where members who passed the age of 20 would leave, but in 2020, this system was replaced and made NCT Dream a permanent unit of NCT. The unit debuted on August 25, 2016 with the song "Chewing Gum" and seven members: Mark , Renjun, Jeno, Haechan, Jaemin, Chenle and Jisung.