Dev here!
#Spoilers#
As for the number of changes, the main character is permanently M2F TG'd, one male love interest is temporarily M2F TG'd, one of the female love interest has a BE animation, a few characters get cat ears/tails, and two characters have an extra transformation at the end of the game. There's also several supporting characters who have been TF'd offscreen, such as a few girls who used to be guys and lots of girls with foxears.
#End Spoilers#
That's the specifics on the transformations! Sorry for coming off as vague.
Cheers
Lach