Yui is an innocent and virtuous Yui. She has a secret sexual fetish. She goes out without underwear and indulges in excitement with a nonchalant look on her face. It is an extremely perverted exhibitionist habit. One day, her husband's uncle, Kenta, comes to visit the house. During a conversation, Yui accidentally exposes her lower body under the table, reaches orgasm, loses consciousness and collapses. Kenta witnesses this... He becomes aroused by Yui exposing her genitals in front of him, and approaches her, immersing himself in a passionate raw sexual intercourse! Furthermore, even Kenta's coworkers find out about her perversion...