Kōki Mitani is a Japanese playwright, screenwriter, and film director, known for his work in both theater and cinema. He was born on March 24, 1961, in Kōchi Prefecture, Japan. Mitani gained popularity for his unique blend of comedy and drama, often incorporating elements of historical fiction into his narratives. His notable works include the film The Magic Hour and the stage play The 39 Steps. Mitani has received several awards for his contributions to Japanese entertainment, showcasing his talent in creating engaging stories that resonate with audiences.