梶永 正史

Japan

Born in Nagato City, Yamaguchi Prefecture. After graduating high school, he moved to Tokyo to pursue a career in film, focusing primarily on screenwriting.

In 2013, he won the Grand Prize at the 12th This Mystery is Awesome! awards, making his literary debut the following year with Mission Commander Ayaka Goma (Takarajimasha), which was later adapted into a television drama. Best known for his police procedurals, Kajinaga also authored Organized Crime Division: Amane Shirataka (Asahi Shimbun Publications)—which was likewise adapted for TV—alongside popular series such as Fastidious Detective: Shingo Tajima (Kodansha) and X1 Detective: Airi Aoyama (Haruki Jimusho).