Yet another character specific trophy. For this one, you'll be using Ryuji Keikain. He's the one wearing green with black hair and a cape. This can be done in any mode aside from training, but it's highly recommended you do this in local versus with a second controller.
Unlike the others, this is one of the trophies I strongly recommend you do in local versus. The reason for this being that the move you must use is a counter. Not only is it a counter, it's a counter that is extremely picky about the timing. That said, you'll have to press Up+

with your main controller and quickly hit

with the other controller. If you aren't quick enough, the counter will have already expired and you'll just get hit. You'll know you've done it when you see a black ball appear and he counters, the opponent will also look to be poised. Repeat this 100 times and you'll earn this.