Seven Nights in Japan is a 1976 Anglo-French drama film directed by Lewis Gilbert and starring Michael York, Charles Gray, and Hidemi Aoki.

When Sumi discovers his true identity she admonishes him for avoiding his duties as the future king (he had absconded from his planned itinerary of factory visits to be with her; he later justifies his absence to the ambassador by asserting that he was simply taking his allotted naval shore leave).

Problems also happen as he is hunted by an unknown Japanese Sect who want him dead, as he left one of their nightclubs without paying (having inadvertently run up a huge bill).

He wanted to go back to Japan, where he had enjoyed making You Only Live Twice and came up with the idea of a twist on Roman Holiday with the roles reversed, i.e. a romance between a royal man and commoner woman.

Others included Aces High, Evil Under the Sun (not made until years later), Sergeant Steiner (later Cross of Iron), To the Devil a Daughter, The Sweeney, The Likely Lads, a remake of Kind Hearts and Coronets with Dick Emery and The Nat King Cole Story (both never made), Spanish Fly and All Things Bright and Beautiful (later titled It Shouldn't Happen to a Vet).