Onnanoko ga H na Manga Egaicha Dame desu ka?

Synopsis

Yukino Shiroi is the new cute girl in class, the kind of girl Kyousuke Kai can only dream about. Yet somehow they wind up going out together. It all seems too easy. But the girl has a secret: she draws the most ecchi manga he's ever seen. It's hard to say what will explode first, his heart, his mind, or something else...