[ENGLISH-SUBTITLE] SONE-011 I lost my sense of reason due to my girlfriend's younger sister's unconscious glance at her summer clothes... Riri Nanatsumori

Her younger sister, Riri, is cuter, more innocent, and super dope than her. However, there is one thing that I have noticed since I met her...that is the summer fashion of modern girls that exposes a lot of skin. Furthermore, while relaxing at home, her pussy muscles are 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 her reason due to the defenseless temptation, and before she knows it, she's massaging her breasts and goes wild. Even though she's nearby...I'm swallowed up by the immoral pleasure and overheat violently until I get heatstroke. Memories of a summer of people who couldn't stop their sexual desire and went crazy...