Kinuyo Tanaka. Kinuyo Tanaka was 43 in Sincere Heart as 'Kuniko'.
Keiko Tsushima. Keiko Tsushima was 26 in Sincere Heart as 'Kiyoko Nonomiya'.
Teiji Takahashi. Teiji Takahashi was 26 in Sincere Heart as 'Keiichi Yajima'.
Akira Ishihama. Akira Ishihama was 18 in Sincere Heart as 'Hiroshi'.
Tatsuya Mihashi. Tatsuya Mihashi was 29 in Sincere Heart as 'Tôru Shimura'.
Keiko Awaji. Keiko Awaji was 19 in Sincere Heart as 'Midori'.
Hitomi Nozoe. Hitomi Nozoe was 15 in Sincere Heart 
Fujio Suga. Fujio Suga was 33 in Sincere Heart as 'Hachirô Sakamoto'.
Eiko Takamatsu. Eiko Takamatsu was 59 in Sincere Heart 
Koreya Senda. Koreya Senda was 48 in Sincere Heart as 'Yûzô Ariga'.
Chieko Higashiyama. Chieko Higashiyama was 62 in Sincere Heart as 'Ichi'.
Yasushi Nagata. Yasushi Nagata was 45 in Sincere Heart as 'Fumiko's uncle'.
Masaki Kobayashi. Masaki Kobayashi was 36 in Sincere Heart as 'Director'Kazui Nihonmatsu. Kazui Nihonmatsu was 30 in Sincere Heart as 'Assistant Director'Toshiyasu Morita. Toshiyasu Morita was >> in Sincere Heart as 'Director of Photography'
Keisuke Kinoshita. Keisuke Kinoshita was 40 in Sincere Heart as 'Screenplay'
Chūji Kinoshita. Chūji Kinoshita was 36 in Sincere Heart as 'Original Music Composer'Yoshisaburo Seno. Yoshisaburo Seno was >> in Sincere Heart as 'Sound Recordist'Kōsaku Yamayoshi. Kōsaku Yamayoshi was >> in Sincere Heart as 'Production Supervisor'Toshio Takahashi. Toshio Takahashi was >> in Sincere Heart as 'Set Designer'Setsutarô Moriya. Setsutarô Moriya was >> in Sincere Heart as 'Set Decoration'