Acchi Kocci plush.

Hi, so i'm going to be making a a plush version of the anime acchi kocci. I can make the anime plushies easily. I have sewed plushies before. (though not anime style plushies.) The problem is that I was trying to find a text to speech app that had adjustable pitch and speed so that I could attempt to mimic the voices of said anime characters. As always the character's voices are very different from each other like any other anime. Unfortunately I was not able to find an app for that. any suggestions? By the way, Acchi Kocchi is Japanese for Place to Place so if you want to check out the anime to see how different the voices really are. Also note that there is not an english dub for the anime. everything is japanese except for the subtitles.