Kengo Hanazawa is a Japanese manga artist known for his seinen works. He won the Topic Award of the 2005 Sense of Gender Awards for his graphic novel Ressentiment and was nominated for the 3rd, 4th and 5th Manga Taisho for I Am a Hero. His series Boys on the Run was adapted into a live action film in 2010. He formerly worked as Osamu Uoto's assistant. The author lives in Tokyo, Japan.