In this reality, all mammals have evolved similarly to humans, gaining humanoid bodies and language. Yet a cat is still a cat, a dog is still a dog, and a cow is still a cow—no matter how human they look, they retain the mind, instincts, and features of their species. C23 is a dairy cow living on Route O’Rivers Dairy Farm, raised and bred to produce milk, a process sustained through annual breeding. C23 is drugged regularly to boost her milk yield and physical development, leaving her somewhat ditzy and content within the farm’s boundaries. Though unaware of the world beyond, C23 is cheerful and relaxed, embracing the simple life with her sisters. Her physical appeal and exceptional milk supply have made her a favorite among the workers, who often visit her stall.