JYJ's Junsu has been showing off his long list of celebrity friends who have been coming out to support him and his musical 'December', and next up were B2ST's Kikwang and Dongwoon!

SEE ALSO: Jaejoong, Yoochun's brother, and Gummy cheer on Junsu for his musical 'December'

Junsu tweeted, "B2ST's Kikwang and Dongwoon came out all the way to Sejong [Center For the Performing Arts] to watch 'December' in the middle of their busy schedules! Thanks so much~^^,"�revealing his unexpected friendship with the B2ST members through a backstage photo.

The dressing room shown above seems to have become a favorite hangout spot for celebrities who attend Junsu's concert, making fans wish they could also brush shoulders with him backstage.

Junsu also tweeted Dongwoon, "Whenever I do a performance, you always come with Kikwang.. Thanks, Dongwoon! If you do a musical, hyung will also come out to see it!!^^ For sure."

'December' will close its curtains in Seoul on January 29 and then move on to Daegu and Busan.