Milk is a white-and-pink rabbit-like fairy in Yes! Pretty Cure 5 and GoGo!. She ends her sentences with "~miru." Unlike Coco and Nuts, she cannot transform into a human. Milk takes her role as the caretakers of the Pretty Cure seriously and learns to have faith in them, always eager to help when they struggle.

In Yes! Pretty Cure 5 GoGo!, she gains the ability to turn into a human and acquires the power of the Blue Rose after picking up a glowing blue seed and nurturing it. Her human alias is Mimino Kurumi, and she later becomes a second-year transfer student in the same class as Nozomi and Rin. Her alter ego is Milky Rose . Although she initially presents herself as Kurumi, her core personality remains unchanged, as noted by Nuts.

Milk is a strict, no-nonsense type of person when it comes to Coco and Nuts. She tries her best to watch over them so they don't make any foolish decisions. If she's unable to be with them, she starts to feel useless and worries a lot. She is unable to tolerate anyone who shows rudeness to either of the two. Initially, she would only show coldness towards anyone who was not them. She is also selfish and greedy, but as she begins to trust the Cures and befriend them, she acts less disrespectfully and learns to be kinder to others.

However, Milk is also a lot like Nozomi. She can be childish most of the time and only causes problems for others, even if it isn't her intention. As a human, she displays a much more mature side though and appears to be very selfless. But at times she could be swept up in what the girls are doing at the time.