The Last Princess (2008)

Original title: 隠し砦の三悪人

After the Akizuku clan fall in defeat to rival clan Yamana, Princess Yuki (Nagasawa Masami) and general Rokurota (Hiroshi Abe), take cover in a hidden fortress, along with their clan and gold treasury. Fortuitously stumbling into the hideaways, brash young miner Takezo (Matsumoto Jun) and his bumbling sidekick Shinhachi (Miyagawa Daiuske) hatch a daring plan to help transport the gold out of enemy terrain - in exchange for a share of the stash, of course. With assassins hot in pursuit, Yuki disguises as a male and ventures into the real world with Rukurota and her peasant companions, getting her first taste of danger, toil, and budding romance with the strong-minded and willful Takezo.