Brave Story/YMMV

The book contains:
""He had noticed Mitsuru's eyelashes then -- long like a fashion model's"
 * Complete Monster: Mitsuru, Mitsuru, Mitsuru. In the book, that is. In the movie, he's an Anti Villain.
 * Ho Yay: Wataru keeps following Mitsuru, even after it's revealed that Mitsuru is a jerk. Throughout the whole book, Wataru acts more like a girlfriend than a frenemy to Misturu.
 * The movie takes this and ramps it almost Up to Eleven. It's the main cause of all of the doujinshi floating around.
 * It's not exactly hidden in the book:

"He's got a pretty face, like a doll.""


 * etc.
 * Jerkass Woobie: This might be too sympathetic for Mitsuru in the book, but he qualifies as this in the movie.
 * The Woobie: Meena seems to fake this in the manga. Turns out that she's real.

The video game contains:

 * Complete Monster: Rei, filling in for the role Mitsuru took in the original book.
 * The Problem With Licensed Games: Averted. Even if one doesn't know the game is based on a book, it's decent enough to stand on its own.