B SIDE (비사이드 bisaideu) is a MUPLY (formerly Mu:fully) reality webseries in 3 episodes. The series followed Stray Kids in their daily life while showing behind the scenes for the release of Mixtape : Gone Days.

Cast:Bang Chan, Lee Know, Changbin, Hyunjin, Han, Felix,

Genre:Reality,

country:South Korea,

Production:Muply, JYP Entertainment,