Shimazaki Nana @ Oshigoto Boshuuchuu

One day, manga enthusiast Oshino Yuuta is asked for help by his neighbor, Shimazaki Nana. As she shows him an H-Illustration she allegedly drew, he realizes: she's the mangaka called "Shimazaki Nana" whom he's been admiring! What's more, she's asking for something rather...!?