What is the name of the Japanese Period drama based on the 18th-century historical event when leaderless samurai avenged the death of their master?
Akō Rōshi (1979 TV series): Akō Rōshi (赤穂浪士 ) is a Japanese television jidaigeki or period drama that was broadcast in 1979. Akō Rōshi (1979 TV series):  It depicts the stories of the Forty-seven rōnin and Hotta Hayato. Forty-seven rōnin: The revenge of the forty-seven "rōnin" (四十七士 , Yon-jū-shichi-shi , forty-seven samurai) , also known as the Akō incident (赤穂事件 , Akō jiken ) or "Akō vendetta", is an 18th-century historical event in Japan in which a band of "rōnin" (leaderless samurai) avenged the death of their master.
Akō Rōshi