How old was Kōichi Katsuragi in Hiratemiki?

Denjirō ŌkōchiDenjirō Ōkōchi was 30 in Hiratemiki

Birthday: Sat, Feb 05 1898 –
Thu, Jul 19 1962

Yōko UmemuraYōko Umemura was 25 in Hiratemiki

Birthday: Wed, Oct 21 1903 –
Wed, Mar 08 1944

Utagoro OnoeUtagoro Onoe was 53 in Hiratemiki

Birthday: Fri, Jan 01 1875 –
Tue, Dec 11 1934

Kōichi KatsuragiKōichi Katsuragi was 38 in Hiratemiki

Birthday: Wed, Mar 12 1890 –
Sun, Sep 06 1964

Kakumatsuro ArashiKakumatsuro Arashi was 50 in Hiratemiki

Birthday: Wed, May 15 1878

Seika ShibaSeika Shiba was 27 in Hiratemiki as 'Director, Screenplay'

Birthday: Mon, Dec 17 1900