It was an equal span, two bay biplane with two spar, rectangular plan wings braced together without stagger by upright, parallel interplane struts.
[1] The fuselage was flat-sided and dominated ahead of the wing by the large, upright Fiat A.12 six cylinder, water-cooled inline engine.
There was a windowed cabin for four passengers immediately behind the engine and between the wings and a side-by-side open cockpit well behind the trailing edges for the crew.
[1] The Tenryu 10's tail was conventional, with a very broad, flat-topped fin with a rounded leading edge carrying a rectangular horn-balanced rudder.
[1] Fukunaga had begun the design as an entrant to a prize-winning flight to Shanghai planned for the spring of 1921 but this was cancelled before the Tenryu 10 had been completed.