Lupin the Third: The Hemingway Papers
ルパン三世 ヘミングウェイ・ペーパーの謎 (original)
A bloody civil war is the setting for Lupin's latest caper; the leader for one of the factions holds documents written by Earnest Hemingway and contain the location of a remarkable treasure. With Goemon and Jigen fighting on opposite sides of the war, Lupin must tackle this challenge alone. As the war rages on, can Lupin secure the treasure and keep Goemon and Jigen from killing each other?!
Starring Kiyoshi Kobayashi, Yasuo Yamada, Eiko Masuyama, Gorō Naya, Makio Inoue, Eken Mine, Fumihiko Tachiki, Jun Hazumi, Kôsei Tomita, Masaaki Tsukada
Watch "Lupin the Third: The Hemingway Papers" from streaming services Pluto TV, Tubi TV released in 1990. It's a comedy and action & adventure movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie, and is currently available to watch for free.