Despite having insecurities about her small breasts, Hinako Mori gradually gains confidence through repeated shoots. Tempted by the myth that "creampie sex makes your breasts grow," she experiences her first creampie. As a result, her chest actually grows—reaching a B cup—triggering a profound transformation within her. Now embracing the risk of pregnancy, she becomes increasingly greedy for creampie sex. This series captures her evolution, offering a realistic and intimate portrayal of her inner journey.