If you like reading comics, then perhaps you'd be interested in Kingdom Hearts: 358/2 Days. And don't just start reading the story in the middle, start with the first volume found here.
The book is an adaptation of a role-playing video game by the same name, Kingdom Hearts. Shiro Amano is the person behind this adaptation and he did all the illustrations in the manga. And for those who don't know what manga is, this word simply refers to the comics created in Japan. It is basically the Japanese word for comics.
The story revolves around Roxas who was born as a Nobody and doesn't know anything about who he is. He joins the mysterious Organization XIII where, with the help of Axel and No. 14, he starts learning more about the organization as well as the meaning of having a heart.