彼女よりも可愛く天真爛漫で超ドタイプの妹・りりちゃん。ただ出会ってから気になることがある…それはイマドキの女子の肌露出の多い夏着ファッション。さらに家でくつろいでいるとスカートからマン筋がくっきりパンチラ。しかもノーブラで屈むとパイチラ、乳首まで見えるラッキースケベについつい目がいってしまう。ダメだとわかっているのに無防備誘惑に理性ぶっ飛び、気づけば胸を揉みしだき暴走ピストン。彼女が近くにいるのに…背徳快感に呑まれ熱中症になるまでオーバーヒート激突きにイキ散らす。互いに性欲が止まらなくなり貪り狂った人ひと夏の思い出…。
Her younger sister, Riri, is cuter, more innocent, and super dope than her. But ever since she met her, she’s been curious about one thing…the fashion of modern girls in summer that exposes a lot of skin. Furthermore, when she was relaxing at home, her pussy muscles were clearly visible through her skirt. Moreover, when she bends over without a bra on, you can’t help but notice her lucky lewd body, where you can see her breasts and even her nipples. Even though she knows it’s no good, she loses all reason at the defenseless temptation, and before he knows it, he’s massaging her breasts and goes wild. Even though she is nearby, she is swallowed up by her immoral pleasure and overheats violently until she gets heat stroke. Memories of a summer of people who couldn’t stop their sexual desire for each other and went crazy…
– JavGG.net
