Alone with my beautiful older girlfriend... A sudden deep kiss, wanton licking, and passionate sex... Am I a scumbag...? Aoi Tsukasa SSIS-300

My girlfriend's older sister suddenly showed up at our apartment building. "Can you stay the night?" the sister asked, confused, as she and her sister had returned to their hometown but had nowhere to stay. The next day, my girlfriend went to Tokyo to look for a job, as if she were swapping shifts with her sister. "Isn't this great? It'll be a secret from my sister..." For the three days my girlfriend was away, I spent time alone with her stunningly beautiful older sister. The intense kisses and lewd licking and intercourse with her drove me wild...