Thanks Griffin!
Well, considering Japan's industrial base at the time I can't imagine they could have produced more than a handful of these.
And by 1946-47 the Allies would have:
US: M26 Pershing, possibly the T29, T30, T34 series heavy tanks that were canciled due to the end of the war
UK: Comet, Centurian
USSR: IS-III, T-44, T-54 tested in '45, entered production in '49- could have been rushed?
Anyone of these had better armour, a much better gun, and would have been available in much greater numbers. Frankly, seems the Japanese had finally designed a tank that would have been halfway decent in '44 but by now it was '46 and it was once again an obsolete design.