My niece has transformed into an adult woman in the blink of an eye. Not realizing the change in herself, she is having fun in just a bath towel, just like when she was a child! But her body is now completely adult, so the glimpses of her chest and crotch are too stimulating! Yes, her innocence is a sin. And I get a faint erection from the sight of my niece's voluptuous body! And then my niece does something unexpected...