Nito Shinkage Ryu Kusarigama Jutsu 二刀神影流鎖鎌術
This is a demonstration at a Kobudo Event held every year in Abeno (Osaka) Japan.
Most participants are members of the Nihon Kobudo Kyokai.
(This video was originally posted as Ito Shinkage..., but a poster kindly gave me the correct name. ) Thanks Steve.