[@JaceBeleren] Similarities between them and Japan (The Human Empire) mainly come in the form of: Clothing (kimonos and other Asian clothing, for example, and their clothing is made of silk the species themselves produces), Architecture, a monarchy (though the humans are not the only ones with a monarchy to be honest), and effectively samurai retainers. Beyond those things i can think of, i think they are possibly different enough otherwise to not overlap or become a "clone".