I'm Shiono Ran, an art student. For a school assignment, I needed to sketch a nude male figure, so I asked my boyfriend to be my model. But halfway through, he started making advances on me, and I couldn't focus on my work. While I was struggling, my father said, "If that's the problem, I'll help you out!" and offered to pose instead. When he stripped naked, I was shocked—his cock was already rock hard and fully erect...