Here’s an idea for a leftist fantasy novel I came up with: A prince/princess of some fairy tale style kingdom is sent abroad on a diplomatic mission, ends up having their propaganda bubble popped, learns about communism, and vows to enact worker rule once their parents die. Once they come into power, how might they set about this if they started from a feudal society, while making sure counter revolutionaries (in this case, like nobles, clergy, other members of the royal family, etc) don’t reverse what they’re doing?
It is not canon with our history, tho, he lives in Odin and Earth does not have a central political role in their stellar systems.
Never watched Legend of the Galactic Heroes, though I probably should sometime as I’ve heard good things.