<human>:  Why did the samurai have a katana in the movie ‘Snow Hunter’?
<bot>: The katana is the traditional weapon of the samurai. It is a long, curved, single-edged sword. The katana is often paired with a tanto, a short, stabbing sword. The katana was used for both offense and defense, and was considered the ultimate weapon of the samurai. The katana is still used in modern Japanese martial arts, such as kendo.