Giddens Ko (simplified Chinese: 柯景腾; traditional Chinese: 柯景騰; pinyin: Kē Jǐngténg; born 25 August 1978) is a Taiwanese novelist and filmmaker. He earned his Bachelor of Science in Management from National Chiao Tung University and Master of Social Science from Tunghai University. He has published more than 60 books, many of which have been adapted as films. He writes under the pseudonym of "Jiubadao" (九把刀), which literally means "nine knives".
九把刀's quirky prose worked wonders for the simplistic 那些年我们一起追的女孩 and 等一个人咖啡, but came off as trashy for 杀手势如破竹的勇气. it was so unbearable, i called it quits 99 pages in. the premise of the story held so much potential, but the garish writing style took that focus away for me. disappointing, really.