In her rural home where she lives a monotonous life devoid of excitement, Azusa has always been curious about H things. She spends her days browsing information and videos online, feeling frustrated by her lack of experience. One day, when Azusa returns home, she finds out that her sister and brother-in-law have come back from their trip, making the house lively again. That evening, after the party, Azusa sees her drunk sister's husband's dick for the first time. Despite not being erect, his large size piques her interest! As Azusa can't stop thinking about her brother-in-law's cock, she eventually sneaks into their bedroom while they sleep...

田舎の実家暮らしで刺激の無い日々を過ごしているあず。Hなことに興味があってネットの情報や映像で悶々としていた。そんなある日、あずが帰宅すると久しぶりに姉夫婦が帰省したことで家の中は賑わっていた。その日の夕方、宴会後に酔った姉の夫のチンポを目にするあず。勃起していないのに立派な大きさの義兄チンポに興味津々！その後も義兄のチンポのことで頭が一杯になったあずは、遂に姉夫婦が眠る部屋に忍び込む…。