SSNI-843 My girlfriend's older sister, who is full of sexual allure, secretly tempts me with her unguarded huge breasts and ass, leading me to have an affair. The worst kind of guy. Hanamiya Amu

On a rainy day, I finally had a girlfriend and went to her house to play. There, I encountered an older sister with a see-through shirt showing off her breasts! She was the complete opposite of my girlfriend, with a style like a gravure model... Then, the older sister started flaunting her chest to seduce me!? Seeing such a great body, there was no way I could hold back. I easily betrayed my girlfriend and lost my virginity...