Nineteen-year-old "Chisa Watanabe," residing in Osaka, debuts in the AV industry from her youth. Despite her remaining innocence, she harbors a perverted sexuality that is unimaginable from her appearance. She decided to appear in AV to fulfill her boyfriend's cuckolding desires. Such a young girl, at first, was bewildered by the unfamiliar filming, hesitating and blushing, but her body was honest, gradually turning to excitement...