A Kokoro Japanese landscape. A girl casually stands at the foot of a mountain where you can feel the great power of Mother Nature. This is Yuuna, who will enter into a mistress contract with her this time. Her pure white skin is as beautiful as fresh snow, and her immature slender body excites the men to the max. She has no sexual knowledge whatsoever, but contrary to her appearance, she has a sensitive reaction where she dribbles out a large amount of juices that form strings after the adults' fingers crawl all over her. The unwashed man's penis is thrust into her narrow mouth and pussy, and at the end, it is poured into her vagina as per his desire. The pre-cum won't stop as the masochistic girl's sexual behavior far exceeds expectations...