Kweh!

[The Black Fan]

In the Town of Mirage there's a man who says:
"Have a tour around the world and I'll give you a surprise" (or something like this).
What am i supposed to do?

[Crossblades]

I never did this sidequest, but all I know is that you need Boco to do it and his ability to walk on water.

[Jowy]

You have to use Boko to walk all the way around the world starting at Mirage, and going all the way back. And make a pit stop at the top of Istory Falls for a little something else.

[Zeromus_X]

I also heard that he'll disappear if you enter the final dungeon, so you have to do this side-event before entering the final dungeon.

At least I think. My memory's hazy on that one.

[yuno]

"Have a tour around the world"

[abrojtm]

All you get is a Mirage Vest, if I'm not mistaken...if you even get anything that good.

[Jowy]

The Magic Lamp from the waterfalls is pretty sweet though.