Asia after a victorious Japanese empire collapses.

What would asia and in particular China and south east asia look like after a victorious Japan collapses and decolonizes the territories it gained in WWII?
 
What would asia and in particular China and south east asia look like after a victorious Japan collapses and decolonizes the territories it gained in WWII?

First, you need to answer these questions:

1. How does Japan win?
2. To what extent do they win?
3. What is the geopolitical situation of the major powers at the time of Japan's victory and collapse?
 
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