And his hair changes again. I swear, it's like that icon says, there needs to be a mini-game where you get to style it. But still, y helo thar, Zack with Buster!

Also, mindless squeeing for that pic of Zack and Aeris together. Damn, I love those two.

Compilation Network says:

...a "Stroll through the Slums event", where Zack and Aerith go on a walk, which is supposedly a "top secret hidden event", and the article states that the past between the two of them will finally be made clear.

And you know "Top Secret Hidden Event" = "You must fulfill every damn requirement to the letter, which might mean deviating from your stated mission/suffering some sort of set-back in order to get this event." I cry.