This wasn't exactly where Tidus thought he was going to end up when he approached this gang of kids. But hey, maybe someone had to keep an eye on them. You know, since they're young and getting involved in manual labour on a foreign world, and who knows what could happen?

"Can't say no to teamwork-" Or maybe he's just easy to convince into anything when it comes to comradery; and so he puts out a fist too, knocking the knuckles of Alfredo's.

"To teamwork!"

Yep, that's definitely the part suckering Tidus in.