A girlfriend who is bad at saying no, a sensitive girl with premature ejaculation, was overdeveloped and ended up being penetrated for 7 days. (Yoshizawa Ria FSDSS-879)

The day my live-in girlfriend and I started considering marriage, her younger sister, Ria, came to our accommodation. Though a bit naive, Ria was an innocent and romantic young woman, somewhat similar to my girlfriend yet quite different. She was also easily seduced and a sensitive girl, so I could enjoy myself to the fullest! I secretly had sex with her, and surprisingly, she became sexually aroused, pursuing me every day and making me feel good!