kusari-fundo
kusari-fundo is a chain weapon or weapon family.
Also recorded as manriki-gusari.
In detail
kusari-fundo is a chain weapon or weapon family.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Kusari-fundo”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q844709: kusari-fundo
Consult the source