I, Who Was Cuckolded By Her Sister 《while She Was Drunk And Passed Out》... Sayuri Hayama

I was invited to my girlfriend's home to have dinner with her family. Waiting for me was her older sister. She served me a lavish home-cooked meal. That older sister was a very sexy woman... Is it my imagination...? It seems like she's been sending me an unusual gaze for a while now...? I have a feeling something is going to happen tonight...