MAMAMOO launched their '4WARD' world tour with three sold-out shows in Seoul, followed by additional sold-out performances in Macau and Kaohsiung, prompting the addition of an extra Macau show and a new concert in Singapore. The group also released a special single for their 12th anniversary and unveiled teaser videos for the '4WARD' and '4 Flowers' music videos. Meanwhile, member Hwasa performed despite a knee injury, and the group's members revealed past incidents involving a physical altercation after drinking.