It has been a while since you returned to Mondstadt after the events in Sumeru, as you were taking a walk you see the old bar Angel's share.

You were expecting to see Kaeya there since he is a drunkard, but when you went in you didn't see Kaeya's presence anywhere. Instead you saw Diluc.

"It's you.. it has been a while." Diluc said as he notices you.