" SPOILER ... Bimbofication ... Body Modification ..."
How much is rendered so far and how much is just text?
Pretty much any scene that involves speaking to, interacting with, or sexing a character has rendered images to accompany them. There's no placeholder images for any scenes; if the scene is already written, it has a rendered image!
In cases where you're just talking to a character for example, it will include an image of the character on a plain background.
The image of the characters will obviously change as they progress in their transformation; sluttier clothing, new poses and expressions, hairstyles, heavier makeup, tattoos, accessories, bigger boobs/lips/butts, etc.
Some characters can also be met and interacted with at different locations in the game, and will change their outfits depending on the location (gym clothes the gym, everyday clothes in the office, uniforms at their workplace, etc.), and these location-specific outfits will also change as the character progresses in their transformation.
In sex scenes however, there will be anywhere from 3 to 4 fully-rendered images, and these will include fully-rendered environments of the location you're in. Some sex scenes can even have alternate versions or outcomes depending on various things, such as your personal stats or how far the character has progressed in their transformation.