Foxquest is a game wich is mostly about Bodypart Transformation.
For these, who don't know this kink:
The general idea is, that the pred absorbs the prey, add it's mass to a specific part of their own body to improve it (bigger, less sagging boobs, a longer and thicker dick, a tighter pussy, etc)
But the prey isn't dying. It remains conscious and feels the part of it's predator's body that s/he had become, because it is now her/his new body.
The way I handle this, the prey can't do anything besides talk to the pred via a mental connection.