"It feels so good I think I'm going crazy." Naku-shima Miyu moved from the countryside to Tokyo and found happiness with a wonderful boyfriend. However, she harbors a secret: during intimate moments, her local dialect slips out. She was once dumped by an ex-boyfriend specifically because of this dialect during sex, and has been desperately hiding it ever since. But her current boyfriend, Asahi-kun, is so skilled in bed that it's incredibly hard for her to hold back her moans!!

Afraid of being disliked by Asahi-kun, she tried hard to suppress her voice. However, Asahi-kun, who takes pride in his sexual skills and was also provoked by a colleague, becomes obstinate in his efforts to make her moan...! His meticulous, gentle caresses and intense suction overwhelm her, making her climax over and over...!!

Somehow, she managed to endure and get through it, but will their relationship become strained...?