Hmmm I read a few because back in the day my little sister was into it. It was a Scholastic series that she got at the book fair, if I remember correctly. They're just chapter books, suitable for 3-5th graders. I finished one in about half an hour. But they're a fun read.
Uh, yes, you do. It's a rather good read and I'm rather sad that you found the anime before the books. Seven in the first series, three in the next, and four in the last. Although they are meant for young-ish children, they're still enjoyable. I'm trying to make my little brother read them.