My senior asked me to take care of his pet. I waited at home, but instead of an animal, he brought a girl with big breasts and a slender body. Her name was Tsubaki. She was a beautiful woman with a slender figure and striking moist eyes. "She loves being deep-throated with a big dick," my senior proudly told me, and then he began to force his erect penis into her small mouth. I was confused by the sight...