Is the Yokosuka Tenga any relation to the R2Y2? BTW, this engineer is dis-satisfied with most drawings he sees of the R2Y2 with two jet engines buried in the center fuselage above the wing and a nose intake replacing the propeller. That long an intake would lead to thoroughly nasty inlet losses and flow distortions. I find the side view from one old French magazine, with podded engines under the wings to be far more plausible. Now, and advanced R2Y3 with fuselage engines and wingroot intakes I could see, but not what's commonly shown.