Mukimukimanmansu (Korean: 무키무키만만수) was a duo from 2011 to 2013, consisting of Muki (무키/정은실/Jung Eunsil) and Mansu (만수/Lee Minhwi/이민휘). The duo met during their studies at the Korea National University of Arts at a film club and decided to perform together with their friends just for fun at their school's Trash Music Festival (쓰레빠음악회). Muki played the gujanggujang (구장구장), a modified version of the Korean folk percussion instrument janggu (장구)