@Ahan1899 there would surely be issues with telecom equipment that uses Japan as a bridge like giant undersea internet cables but overall besides their cultural and technology exports they don't have a ton of irreplaceable influence. It's not like if the US disappeared which would cause a massive power vacuum militarily and cause power conflicts between China, Russia and Europe. Same with Russia or Europe. Japan doesn't have a real military presence and relies alot on us alliance plus US ocean fleet and military bases for support.
I'd be surprised if this tries to even cover what the US bases will do now that they're cutoff from US central command.
@uwingy Dude you'd just have to join the land force and be able to taste real RPG. Otherwise you'd be limited to gaming only with others in Japan, etc.
@Rukja No point in taking over the world unless you plan on settling it with your own people. They already have "won" by having overwhelming military superiority and technology. It's game over from the start. They biggest problem other than loss of imports from our world would be long term low birth rate like in real life. Oh and banking losses as japanese resources and investments aren't all in Japan.
The other thing is Japan buys alot of military assets from US companies like much of the world so their military might be ok for now but theyve lost access to further purchases and maintenance parts imports. They don't really have a large weapons, munitions and military vehicles manufacturing industry in-house.