is the goal of the game to fatten them up? or can you progress in their stories even at their base size? like can you find a "stage" you like and keep them there? i like chubby, but ginormous is a bit much for my tastes ya feel?
All story scenes are tied to weight gain, but no weight gain is forced. So technically yes, the goal of the game is fattening up, but if you get to a point you like you can stop feeding at any time.