Fukunaga "Tenryu 10 Shizuoka" airliner

Hi all... Has anyone more details about this obscure 1920s Japanese airliner, the Fukunaga Tenryu 10?
Was it adapted from a foreign design or a genuine local development?
Was it called "Tenryu 10" or "Shizuoka"?
Can't access my library at the moment (I'm in the midst of another address change, packing books and stuff...)
Thanks to you all!

Of course I have my dear Skyblazer,

but sorry,I am in anther town now without my laptop.

Here is a more Info about it.

Please try auto translation.
http://roy.hamazo.tv/e4024906.html
Fukunaga Tenryu ju go.（福長　天竜１０号）
https://www.google.co.jp/search?q=%E7%A6%8F%E9%95%B7+%E5%A4%A9%E7%AB%9C%EF%BC%91%EF%BC%90%E5%8F%B7&biw=1350&bih=635&source=lnms&tbm=isch&sa=X&ved=0ahUKEwje_N-22IrOAhVFmZQKHZplDDEQ_AUICCgD

http://lib.city.iwata.shizuoka.jp/iwata/chomei/fukunagaasao.html

Hi!
Fukunaga-type Tenryu No. 10 passenger transport aircraft
Design Yoshitoshi Kinoshita
production Fukunaga Aircraft Manufacturing Co., Ltd.
It was a passenger four-seater transport aircraft completed in 1922 and attracted attention as a very ambitious design at that time. The following year, this aircraft competed in the 4th private flight competition in Shimoshizu and flew 531km (3 hours and 48 minutes) in distance competitions and finished fourth.
There was a four-seat cabin behind the engine, and the cockpit was a parallel double seat.
This aircraft was a long-range type that was prototyped for Shanghai air route development in the beginning private, but this plan was later canceled, it is said that the fuel tank space of the main wing central portion was changed to a guest room.

[Type/Structure] Single-engine biplane with wooden frame feather-covered structure. Total length: 9.40m Full width: 12.95m Total height: 3.10m
Wing area: 38.0 square meters Occupant: 2 + 4 people
Engine: Fiat water-cooled in-line six-cylinder 300 hp
Weight: 1100kg Total weight: 1800kg Maximum speed: 180km/h