AGE OF JAPANESE GUERRILLAS (1968)

Kinta (Nabe Osami) is Japanese by birth, but raised by a Chinese man. He stowsaway to Japan to see his girlfriend Yukiko but gets picked up for vagrancy in Shinjuku and thrown in jail. Helped by a yakuza and a prostitute, he goes on a search for Yukiko but winds up on a journey of sexual discovery.