This film is one I tuned into quite by random, clicking on the suggestions that Netflix provides (and which are usually quite inaccurate). Luckily, this one proved to be worth my time. War of the Arrows is a Korean film, set during the historical period of the second Manchurian invasion of Korea. The basic set-up revolves around a boy and his sister whose father is declared a traitor and killed, forcing them to run and hide with a friend of the family.
This is just the intro, however, and most of the film involves the grown pair of siblings, the brother Nam-Yi (Hae-il Park) and his sister Ja-In (Moon Chae-Won). The other main character is the adoptive brother of the pair, Kim Min-soon (Seung-yong Ryoo). There are also a few generic buddies that come along for the ride and provide some combat support and a bit of comedy relief.