Further to my previous post about Kusarigama (鎖鎌 - chain-sickle):
Although there are theories suggesting that the kusarigama was originally a farming implement, it seems probable that the kusarigama (鎖鎌 - chain-sickle) evolved from the large battlefield 'jingama ' (陣鎌 - battle camp sickle).

The 'Bugei Ryūha Daijiten' by Watatani and Yamada (1978) records the Kitō-ryū (起倒流), (which is derived from Ryōi Shintō-ryū 良移心当流) as having the following elements within its curriculum:

* Jū 柔(pliability)

* Kabuto 兜 (helmet)

* Kumiuchi 組打(battlefield grappling)

* lai 居合 (sword drawing)

* Bo 棒 (six foot staff)

* Tachi 太刀 (long battlefield sword)

* Jinren 陣鎌 (battle camp sickle)

Note - Jinren (陣鎌) is the 'On', or older reading of 'kama', so 'Jinren' is the same as 'Jingama' (陣鎌).

The pictures above are: 'Kirishima Matsugorō with a sickle on a bamboo pole, by Kaisai Yoshitoshi hitsu, from Biographies of Modern Men (Kinsei kyōgiden)' (1865 - 1866). (Source: https://www.pinterest.co.uk/pin/467107792576822393/) & Bujinkan Dōjō (武神館道場) Sōke (宗家) - Hatsumi Masaaki (初見 良昭) demonstrating the use of the jingama.