>Do you have any idea how hard that is to actually do?
She gets a lot of practice... but really yeah it's physically impossible the way it's depicted here - unless his cock takes a 90 degree bend or enters her brain stem.
>Any chance this animation will ever be sketched out the rest of the way?
Maybe. There's a looped version where her arms and hair don't disappear in the upload queue.
The Mako transformation was intense and it was good like that, but it doesn't feel as intimate as this one. I find the breast growth in both WIPs to be superior to the one Mako had.
I have some bits from this sequence that I could go back to, but I took the concepts and really punched them up for the miss mako transformation. This sequence seems kind of tame by comparison.