I have no idea what it's supposed to be representing. The opponent is just throwing unfriendly words out at Makoto, I guess, and Makoto just sits there and tries not to let the bullying get to him until he finally decides to bring up the proof?
The repeated sound bites get annoying after a while.
Once hyper mode is activated it's not exciting at all, just button mashing. That takes up like half the fight.
Makoto's "This should prove it!" in English sounds unusually nasally and uncool, and the opponent's shocked sprite twitching back and forth and retreating looks kind of odd.