?B2ST has released an MV teaser for their second pre-release song "I'm Sorry"!

The boys already released the full song, but it looks like they will be gifting their fans with an MV to go along with the song as well! 

The teaser features the B2TUIES at their concerts, almost nervous with anticipation for the new song.

Check out the teaser above, and make sure to stay tuned for more B2ST goodness!