I'd be more accepting to these images if Rozenweapon didn't make Suiseiseki and Souseiseki brown-eyed while making them human. It's great art, I must admit, but if he's gonna remove one of their most important physical traits, then I don't see any reason to still call it Souseiseki. After all, he could keep Gin's purple eyes, and it is actually a lot more rare than red-green heterochromia, so I wonder why purple eyes are okay to keep, but heterochromia is not?