Katou Ayano is a female student who draws very well and there is no scene that can stump her. Today, her teacher wanted to test the concentration of the female students in the drawing class so she let a young man be her model. Katou Ayano came to class and saw her model and was very surprised because it was a naked guy but she still focused on the main problem which was to complete the work. While drawing, the guy's dick got erect and she couldn't concentrate and kept staring at it, accidentally she sketched the guy's dick. She could only focus on that dick so she left the drawing and went to suck the guy's dick enthusiastically. And then she failed the drawing class because she couldn't control her lust in front of a dick that was exposed like that.