Tsuki kusari - Thrusting forward, Short chain

Video of Kusari tsuki, thrusting forward, with a short chain

Video of forward punch with a short chain

Tsuki (kusari) (צוקי קוסארי, מכה ישרה לפנים, שרשרת קרב קצרה), is short chain Ninjutsu technique that uses the Kusarifundo combat chain, the to hit the face.