How old was Saburō Isayama in Daughter and Springtime?

Nobuko FushimiNobuko Fushimi was 16 in Daughter and Springtime

Birthday: Sun, Oct 10 1915

Etsuji OkiEtsuji Oki was 28 in Daughter and Springtime

Birthday: Tue, Feb 16 1904 –
Tue, Dec 22 1936

Fudeko TanakaFudeko Tanaka was 19 in Daughter and Springtime

Birthday: Sun, Mar 16 1913 –
Mon, Feb 23 1981

Akira KishiiAkira Kishii was 21 in Daughter and Springtime

Birthday: Thu, Oct 13 1910 –
Sat, Jul 03 1965

Shiko SaitoShiko Saito was 31 in Daughter and Springtime

Birthday: Tue, Apr 16 1901 –
Thu, Nov 30 1961

Koji ShimaKoji Shima was 31 in Daughter and Springtime

Birthday: Sat, Feb 16 1901 –
Wed, Sep 10 1986

Tomotaka TasakaTomotaka Tasaka was 31 in Daughter and Springtime as 'Director'

Birthday: Sun, Apr 14 1901 –
Thu, Oct 17 1974

Kajirō YamamotoKajirō Yamamoto was 30 in Daughter and Springtime as 'Original Film Writer'

Birthday: Sat, Mar 15 1902 –
Sat, Sep 28 1974

Saburō IsayamaSaburō Isayama was 31 in Daughter and Springtime as 'Cinematography'

Birthday: Sat, Jan 05 1901 –
Thu, Sep 21 1967