Dumped quicker than I thought it would. Maybe there was a popular old Anime of this?
Anyway, Lio's right... The game won't save with VBA. It works with the emu that Djgarf put up for the Sonic X video, though. Well, that's 2 games released by Caravan that doesn't work on VBA now. This and Toruneko no Daibouken 3 Advance. I guess you can use the save state at least in VBA for this game instead of being stuck in a cycle...
As for the BB Ball battles, they're nothing exciting so far. Game graphics are pretty good but the animation's kind of low.