Hey, guys. I suppose it's finally time to come out with it... this is a dead fic. What started as an interesting idea just got dragged out way too long, and ultimately, I think this has to come out to stop any more questions. Turns out that me and my collaborator discovered that writing an Ace Attorney case is FAR harder than we first assumed.
However, to not TOTALLY disappoint you, I will disclose who the villain was. The villain was intended to be Kyurem, envious of both his more 'complete' counterparts (Reshiram and Zekrom) as well as viewing humans with mostly indifference... but didn't think Ash was really deserving of 'praise' so to speak. Having not really met Ash in his movie (the Keldeo movie), he viewed Ash with disdain for stopping his initial match with Keldeo. Cresselia's murder was because she was a witness in the crime scene, he had nothing against Cresselia.
I know it's not really anything exciting or fabulous, but nothing ever could be. It was far out of both of our leagues, but hopefully this at least gives you all some closure on the story, even if it isn't satisfying.