by Claudine Zap Apologies to Tolstoy , but one of the biggest novelists these days is a 15-year-old in Japan who wrote a book from her cell phone using her thumbs. Really. The new type of storytelling is called "keitai" â€" cell-phone novels . Aimed squarely at those who can't be parted from their mobiles, teens â€" mostly young women readers and writers â€" have turned the cell-phone story into the must-read phone book. According to a story in the Los Angeles Times ,