Will say, the idea is rather neat. Though, personally the whole hyper part ruined it for me.
Was really out of no-where. And atop that: It was entirely one sided. No focus on the mom whatsoever. And solely focused on his dick. I mean, not only was he hyper, he didn't even have a pussy. Really didn't get the whole "Stevonnie" aspect at all.
Still, the idea was novel as said. Just feel like it could have been executed a lot better/more varied.
It flows pretty smooth though. And has some really neat scenes. But yeah... it could at least have included one scene focused on Connie's mom. And Stevonnie's pussy. As of now, it's just yet another one sided, cock worship, hyper genderswap animation. It's not bad one, it's rather good. It's just the "it's just another one.".
The expressions are really solid though. You did mess up the perineum in the annalingus scene. Then the pelvis in the anal one.