Yes.

After a few hours of exploring your new chest, Kako returns.

"Time for another anal fuck," you state. "Looks like that cock is fucking huge, too!"

"Yuppers, when your ass is bigger, this will be needed to fill your hole." It looks twice as thick as before. "But this isn't going up your ass yet. Drink." She starts wanking her meat in your face. You open up and put your mouth over her hole. She quickly squits sour fluid into you. You swallow easily. Your hips immediately start widening, followed by your thighs. Your ass plumps up as you continue to drink. Before you realize how big you are, the ass of your panties slides slowly inwards. Soon, the back rides up into your ass crack, making it a thong on your huge butt.

When she finishes, you say, "Let's try that out."