Woah, not what he was expecting from Tifa. Honestly Zack thought that she would ignore him considering their last encounter wasn't exactly pleasant. Memorable but definitely not pleasant. But out of everyone he's met so far, Tifa is the one he can really tell is from maybe the same time as him or maybe even further in the future. Either way he's glad that she survived the injuries that Sephiroth had given her.

So he laid his hands on her shoulder gently, as if to prove to her that he wasn't going anyway.

"It's been four years since Nibelheim..." burned to the ground. "I was taking Cloud back to Midgar."

He couldn't stay in that fake facade, the ghost town that had nothing but ShinRa troops roaming around.