Leessang's Gil hinted that the 'Infinity Challenge' members may show up at their joint event, 'Shut Up Concert'.

On December 4th YB and Leessang held a press showcase for their upcoming concert, 'Shut Up Concert,' at a club in Gangnam. Because the 'Infinity Challenge' members had shown up for every show during Leessang's 'Leessang Theater' tour, they were asked if they may show up for the 'Shut Up Concert' as well. Gil answered, "There are no plans to do so right now. However, the 'Infinity Challenge' members are so random, so I cant' say anything for sure. Who knows, if they feel like it, they might just come up on stage."

'Shut Up Concert' will be held on December 23rd to 25th.