B2ST say 'Good Luck' choreography is their most difficult one yet + MV making clips

SEE ALSO: B2ST's Hyunseung suffers an ankle injury after 'M! Countdown' rehearsal

Fans may have noticed that this new powerful routine is different from the previous B2ST dances we've seen, and�Junhyung�explained why this is so. After their stage on�'Music Bank', he talked with 'Osen' to say, "It is difficult stamina-wise to carry out the strong choreography... I think it's the most difficult choreography among the ones that we've done... That is probably why I feel that every time I do it, that it's really difficult... Since it's only been two days since our comeback, we will keep fighting on even though it's hard."

Hyunseung, who recently injured his ankle,�also assured B2UTY that he is getting better. He said,�"This choreography is harder than it looks... Because I didn't loosen up my body enough and lost my concentration while dancing, I injured my ankle... Fans don't have to worry so much. I am working hard to take care of my condition."

Stay tuned for the rest of their comeback stages on 'Music Core' and 'Inkigayo' this weekend! But in the meantime, you can also check out more of their choreo and how their MV was put together in the bts clips released below!