It’s a result of the RPG’s famously rushed translation.

But maybe not in the way you think.

Have Cloud say it way more often.

Cloud picks himself up from the floor of a ruined church, as Aerith looks on.

it’s possible for you to see the full script and all its alterations inthis Google sheets document.

As for the “let’s mosey” line, the solution is counter-intuitive but it checks out.

As a result, when he says it in this climactic moment, it makes no sense.

To us English speakers, he’s never said it before.