Song is called Sign
It's been announced that Chanyeol has 3 writing credits (so far) on this album! Every song previewed so far except 24/7 (xiumin's teaser), and this one he's been confirmed to have had a hand in writing.
EXO D.O "Empathy" album highlight medley AkMu featuring IU "Nakka" MV teaser Golden Child "Game Changer" Hong Joo Chan & Lee Jang Jun…
source: SMTOWN there's going to be some hurt feelings in this post lol