In japanese martial arts, theres an art for everything…
Hand-to-Hand – Jujutsu
Sword – Kenjutsu, Kendo
Spear – Sojutsu
Staff – Bojutsu
Shurikenjutsu, jojutsu, ect.
Why aren’t they all taught in the same art like Kung Fu.
Typically Kung Fu teaches all weapons… Theres no such thing as a chinese art that teaches weapons only. School vary, but no matter what if you want to learn how to use a chinese straight sword, you have to do Kung Fu, and learn Hand-to-Hand and other weapons, but in Japanese martial arts, if i want to learn just the Katana, i learn Kenjutsu or Kendo.