A single labia minora conceals the labia minora.
In movie 4, even when her legs are spread and her labia majora are open, her labia minora remain closed, but a milky fluid is already seeping from the small gap.
In movie 6, even when she spreads her legs wide and opens her labia majora wide, her labia minora remain tightly closed, but in the end, she inserts her fingers into her vagina and stimulates herself, letting out a moan as she finishes.
Her longing expression at the end is also wonderful.
Movie 2: A milky fluid leaks from her tightly closed labia.
Movie 3: A close-up shot shows milky fluid overflowing from between her small labia minora.
Movie 5: She spreads her labia herself, exposing her vaginal vestibule covered in milky fluid.
In contrast, she doesn't seem to get very wet when masturbating. Perhaps she couldn't get into it?
I agree with AnalFetch! Watching the videos, you can sense her age a little (no offense), but Kiyoka-san is quite endearing and charming. Her bold presentation is also wonderful. Looking at her recent new releases, which feel very repetitive, I've been thinking lately that it might be better to reduce the frequency of new releases and do revivals of older works.