I think reading American or British novel is not so efficient. Before understanding English, you need to study American history, culture, or society.
These factors are just a knowledge, so you don't need to be bothered by them if you want to improve your English reading skill.

Japanese translated novel would be good. Haruki Murakami's works are translated into English, and some light novels, such as Haruhi Suzumiya, are also available in English.
You can find them on Amazon.co.jp.