NACR-318 Saki Kiyone, a fair-skinned nanny of a college student

I'm Sakiyoshi, a college student. My parents are designers of a certain apparel maker. That's why I'm studying at art school because I want to go on the path of design. But I'm not good at drawing naked men, especially genitals, so I ask him to be a model, but I always ask for me on the way and I can't practice. In trouble, I consulted with my father, but that wasn't the case ...