On December 28th, Mnet showed a preview video for the next episode of "Boom the K-pop", which will cover the recent "United Cube in Brazil" concert.

Gaining much attention, the preview video showed B2ST's Lee Kikwang looking on at the stage in a wheelchair, making the program’s viewers curious whether he was able to stand onstage with his members in such a state.

Kikwang accidentally sprained his ankle while on the set of MBC drama "I'm Flower Too". He pulled a ligament while exercising during his break and ended up heading to Brazil with a semi-cast on his leg.

Netizens who got to see the preview commented, "He did make it to the stage, right?", "He said he was okay, and he’s always in a wheelchair or being carried by someone. I feel bad" and "Hope the world tour goes well".

Watch the full episode of Mnet's "Boom the K-pop" on December 29th.