Ryoko falls through a “rip” from his manga world to a realistic world. He does not fit in to school or life because he is so different than the “normal” kids. He changes form when struck by a strong emotion, sweat drops appear on his head, when he moves too fast lines appear in the air around him and many other manga style things happen. He falls in love with popular girl Marissa and wants to teach her that her world is not that different than his. He teaches her how to move between the panels. Their romance/friendship causes problems with her ex and the kids at school.
This is a very meta type book. Barry Lyga uses all kinds of different manga references to tell the story and illustrate Ryoko. I don’t read manga, but I loved that aspect of the book. I thought the story itself was a little flat, but I think that might have been part of the point. It is always interesting to see how characters react when they know they are in a book.