The boys of 2AM are officially back after seven years apart!

On November 1 KST, the ballad group released their new mini album 'Ballad 21 F/W,' featuring double title tracks "No Good in Good-Bye" (produced by J.Y. Park) and "Should've Known" (produced by Bang Si Hyuk).

"Should've Known" is a song that expresses the longing and sadness of a break-up with a warm melody and lyrics that express the pain of reflecting on the past, including, "After sending you away / I'm crying like this / After crying / I guess I know what's precious / It's only now / Regretful me seems like a fool but / can't we turn back time just once?"

"No Good in Good-Bye" is another ballad directed to an ex-lover, expressing the complicated feelings of the moment when the one you loved finds out that you're breaking up. The emotional lyrics and music unfold dramatically as if watching a movie, and the music video is similarly cinematic, featuring 2PM's Junho and Kim So Hyun as the two main leads.

Check out both music videos here!