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And that, my friend, is a great thing about taking martial arts. You get to learn about a variety of weapons. For example: ninjatōs are shorter, straighter swords designed to inflict quick lethal blows close range - while tantōs are shorter swords (size of a knife) and could be used as a shōtō in conjunction with another sword. Me, personally, I prefer using bo staffs, as they're great for when you're fighting more than one person.