Lady dragon: fist of fury (1970)

Sinopsis

Lovers Mirei and Tsuyoshi once devoted themselves to perfecting their martial arts, but Tsuyoshi abandoned kung fu and led a self-indulgent life. One day, the two are confronted by Jun, Tsuyoshi's former rival and love rival. Jun invites Tsuyoshi out to settle things, but Tsuyoshi has a reason for abandoning kung fu. Mirei is torn between the two...