Pretty much that, yeah. Probably a bit more quiet and withdrawn, but not a whole lot.
...I gotta be honest, though, I'm flattered that you want to do this, and I recognize that adapting a work to another medium necessitates some degree of fiddling around with it, but it feels (perhaps unfairly?) to me like you're focusing a lot on the idea of changing things for the sake of changing things. I'll admit that Iridescent Sun isn't some kind of genius masterpiece where the whole story is a finely-tuned, perfectly-planned Swiss-watch mechanism in which every piece is crucial to the whole, but it still is what it is for a reason...