Can anyone help me find a specific doujin?
I've searched a bunch of keywords on google, bing, and reddit but I can't find it anywhere.

It had some really well drawn fight scenes (particularly with Starmie) with Misty, Red, and Blue at some sort of tournament. I think they were all a few years older than the events of RBY. I don't remember there being any porn elements to it so I don't think it would be on any sites like that.