I totally forgot about the characters from the first volume xD I just realized how many years it's been since I've started reading this. I like how Eri and Kouno actually went to Macedonia LOL. The only storyline I'm confused about is Emma (and Daisuke?). So...she still has a crush on Gin even after all these years? What does him going to England have anything to do with her anyway? I might've missed something but that's still weird. I'm not sure if I like the tease of Ai and Sumire at the end; I feel like he should've gotten over her.
From the top of my head, my fav couples were the marshmallows pair and glasses/delinquent.