SSNI-329 My girlfriend's beautiful older sister is trying her best to express her frustration, and I'm the worst person to secretly have sex with her. - Nene Yoshitaka

When I went to visit my girlfriend's parents' house, there was an extremely attractive older sister, and for some reason she was very interested in me! - ? - A frustrated older sister who seduces her erotically when she isn't looking. - ``I'll show you what really feels good.'' I easily succumb to the temptation of the older sister who approaches me in every way, and even though I feel bad for her, I keep having sex with her even though she's by my side!