Mobile phone novel becomes best seller

A 15-year-old Japanese girl has seen a book she wrote on her mobile phone go on to reach the best seller lists. It turned "Bunny" into one of the country's top authors of a genre called Keitai.

After getting its start as a tale told on tiny phone screens, her three-volume novel "Wolf Boy x Natural Girl" has gone on to sell more than 110,000 paperback copies since its release in May, according to Starts Publishing Co.

The author, who took her alias from Thumper's friend Miss Bunny, started writing when she was in the sixth grade, after her parents bought her a mobile phone and saw a TV ad about a keitai novel website. Wolf Boy quickly became one of the most popular novels featured on the No-ichigo site.

Keitai writers can choose to publish their online content immediately or keep it unlisted. Most writers upload the content as they finish so they get instant feedback from the readers, who access the stories on the website and click through the pages.

The prize for the most-read story is getting your novel into print. To date, "Wolf Boy" has grossed more than $611,000.