The Red Empire

In 1991, the USSR, the biggest country in the world dissolved. The country's leader has betrayed their people again and again. But, what if, in 1979, before the Soviet army invaded Afghanistan, the whole country was transferred to an Isekai, that existed with magic, the undead, elves, dwarfs, and others. The undead empire invaded them, opening the Pandora box. The red bear has now awoken, and the world will see his might.