Why though? It was ruled by the Japanese already. Puyi and his court had no power. It would also undermine the entire "Greater East Asian Co-Prosperity Sphere" shtick Japan was pushing for propaganda purposes.Say Japan wins in China and gets recognition of Japanese puppets and large amounts of territorial and economic concessions.
Would Japan eventually annex Manchukuo similar to what happened to Korea
Why though? It was ruled by the Japanese already. Puyi and his court had no power. It would also undermine the entire "Greater East Asian Co-Prosperity Sphere" shtick Japan was pushing for propaganda purposes.
Depends on how 'Japanese' the place became. Migration was encouraged, Japanese businesses had preference, Japanese was 'encouraged' in the schools. When the US Army came to Korea in 1950 they found about every Korean age fifteen or above spoke some Japanese. Maybe some areas would become Japanese enough to justify the reorganization of the Manchurian state with certain strategic provinces having a special status & political affiliation with Japan?