Kama (鎌, Kama) are
Okinawan and Chinese weapons that resemble traditional farming
devices similar to a scythe. It was originally a farming implement,
used for reaping crops. During the annexation of Okinawa by the
Satsuma, all traditional weapons were outlawed. This led to the
development of the kama and other Kobudo weapons.
When a ball and chain are attached to the end of the Kama, it
becomes a kusarigama, a formidable (if hard to master) weapon
because its range makes it extremely difficult for opponents to
approach the wielder.