Soviet Mosir (Ainu) ASSR

Soviet *Hokkaido, Commie North Japan or the partition of Japan into occupation zones have been tried before many times but this time I want to consider this particular scenario with a POD after Japanese capitulation:

- Even tho at the time of Japanese capitulation MacArthur was willing to occupy Japan whole and Hokkaido is considered one of the Home Islands, now that the Oder-Neisse Line was drawn up and the partition of Germany went apace, Truman (or someone in his admin) invited the Soviets to Hokkaido, the Chinese to Kyushu and Britain to Chugoku and Shikoku, to take some burden off MacArthur himself. This wasn't exactly the partition plan drawn up during the war since I've shifted the occupation zones around and the 2 main cities would remain fully American. China refused in order to concentrate against Communists, so Britain also took over Kyushu.
- Stalin decided against making a go of northern Honshu. Ethnic cleansing of Japanese started immediately in Soviet-occupied Hokkaido, with ~3.5M Japanese leaving Hokkaido, while anyone with a proven Ainu lineage or Communist sympathies were allowed to remain. 1-2 million Slavs, assorted nationalities and deported minorities (especially those originally from European & Caucasian Soviet Union) settled in what would become the Mosir Ainu ASSR of the Russian SFSR. Japanese culture became as repressed as German culture was under the Soviets while Ainu culture was promoted in a sanitized socialist form.
- In ~1952 the American and British zones reunited to form post-war Japan. Japan was forced to renounce the claim over Hokkaido, just as Germany OTL eventually did with everything East of Oder-Neisse in 1990. Eventually some Japanese leftists could immigrate to Mosir as both a symbolic gesture and practical sheltering of anti-Capitalist dissidents against American-allied Japan. Mosir was now a second Kazakh SSR where the titular nationality was microscopic, vastly outnumbered by Russians and Russified populations.
- Mosir is retained by Russia after the end of Cold War (doesn't have to be at the same time as OTL) just as Kaliningrad Oblast remains with Russia, and made a(n ethnic) Republic of the Russian Federation of both Ainus and Japanese, recognizing that Japan started to settle Mosir before the Meiji Restoration. Japanese culture is still degraded below the Ainu one and they now massively emigrate southwards. As with the rest of Russian Far-East, Russians and Russified populations move west or anywhere abroad that they can secure immigration visas of.

Is this too ASB? How would Mosir fare in the Soviet Union and Russia (probably worse than in OTL Japan)? The Ainus with their culture promoted but socially as repressed as everyone else in the Soviet Union?

Obligatory note: I do not condone any ethnic cleansing/genocide, and please keep CP discussions including any related to Russia's OTL conduct to Chat.
 
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Sounds unlikely. How much there was even Ainus anyway? Taking how low their numbers are currently probably not too much so whole plan for expel Japanese population seems impractical. More plausible is just create Socialist Republic of Japan. Not even sure how much Stalin cared to take Hokkaido.
 
Sounds unlikely. How much there was even Ainus anyway? Taking how low their numbers are currently probably not too much so whole plan for expel Japanese population seems impractical. More plausible is just create Socialist Republic of Japan.
You might go and tell any ATL German-speaking Silesian or Pomeranian that their own home provinces/states are exclusively Polish in our OTL, because Stalin pretended to fulfill ancient Polish revanchist dreams. ATL Stalin could also pretend to liberate Ainus from Japanese Imperialists and colonizers, and proceed to re-colonize it like Kazakhstan or Kalilingrad.
Not even sure how much Stalin cared to take Hokkaido.
https://en.wikipedia.org/wiki/Proposed_Soviet_invasion_of_Hokkaido (This isn't what I prefer for this ATL but just to show they kinda want it if they could have it)
 
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The Cairo and Potdsam Declarations, which specifically mentioned Hokkaido, would have to be backtracked on this one term, because the main Allies now also recognize Hokkaido as a "[territory] which [Japan] has taken by violence and greed" in the spirit of the Cairo Declaration, just that it started before the main Imperialistic expansions. They could do everything to Japan and contradict themselves under unconditional surrender.

The US could try this too with Ryukyu expelling some clearly Japanese settler population (very hard to tell apart from natives at that point) without consciously trying to settle anyone outside military personnel, and turn it into a territory with Ryukyuan co-official with English. There would be movement to "reunite" the territory with Japan but depicted as fringe as Hawaiian nationalism in Mainstream Media. Bonus if Japanese-Americans in Hawaii and other Pacific American territories were also "repatriated" to Japan post-war like those in the Pacific Mandates, and Japanese-Americans from the continental US or new Japanese immigrants were banned from moving to these territories for some years, but both are for another thread.
 
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Any more takers for how Mosir fares under Soviet Russia? Like, treated as a part of the Far East?
Collectivizing the properties left behind by the Japanese? I think it could be one of the wealthier parts of the USSR.
 
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