Boy
少年 (original)
A family of four lives off of scams in which they pretend to be injured by automobiles. After suffering an injury during the war, the father believes he is an invalid. He and his wife have a 10-year-old boy and another, younger boy. The adults pretend to be injured by autos in crowded traffic, blackmailing the fearful motorists with threats to call in the police.
Starring Fumio Watanabe, Akiko Koyama, Tetsuo Abe, Takeshi Kinoshota, Do-yun Yu
Watch "Boy" on Criterion Channel released in 1969. It's a crime and drama movie, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of movie.