So I finished my first route on Olympia Soiree. I decided to do Riku first since that was what was recommended and well... they put a lot of effort in world building, but some stuff just doesn't make sense like why are they letting Olympia go everywhere unsupervised, especially in the underground where they keep all the criminals? You think being the last of her kind they would at least give her some sort of bodyguard. Also, the genetics of this world doesn't make sense AT ALL. I feel like they don't know how dominant and recessive genes, codominance, etc. work. You could argue that these people aren't human so their genes for inheriting hair color and Batsu magic and stuff works differently. It also seems like people of the same primary colors who interbreed have a high chance of creating potato babies.
Also, if there are no men born of the white caste and women of the white caste only give birth to babies of the white caste meaning all of her children would be girls, HOW THE HELL DOES THAT WORK? Because in humans, the sex of the baby is determined by the father. Would that mean their sex chromosomes are different or something? I feel like these people haven't done the research on basic genetics. If they are making genetics and stuff different, they should have at least known enough about it to be able to explain how it works and make it make logical sense still