The most interesting girl's 'real, unadorned sex'. Airi Haruna, with her soft, pink skin, visits the home of a rough man living alone with a tense look on her face. When this innocent and simple girl drinks alcohol and easily abandons her intelligence and reason, she opens her legs wide from behind and Airi Haruna, which is too embarrassing for a man she's never met before! She continues to be devoured without resistance, and her face and crotch become wet and gooey. This is the story of how Airi, who is at the mercy of the man and willing to accept anything, is developed into a naughty woman.