I trained my sister to be my sperm bitch

趁著爸媽出去旅遊和姐姐出去開房姐姐被我操著還不忘記回她男朋友信息把姐姐調教成我的精盤母狗
While my parents were traveling, I went out to get a room with my sister. My sister was fucked by me and she didn't forget to reply to her boyfriend's message. I trained my sister to be my sperm bitch.