Liberal Arts College Chick with Big Tits: Yuna Ishikawa - Part.2

I'm Yuna, an art student. I had to do a naked male sketch for a school project, so I asked my boyfriend to be my model, but he kept asking for me in the middle of the project and I couldn't make any progress. When I was worried about it, he said, "If that's the case, I can help you!" So I asked him to help.... I asked him to help me....