XRW-284 — My Cute, Kind, And Proud Older Sister Turned Out To Be A Nymphomaniac Masochist! Ikumi Kuroki

My beautiful sister is a reliable person who works in place of our parents and does the housework. One day, when I came home, I saw my sister calling the old man in the neighborhood "master" and begging him to let me lick his dick, indulging in absolute submission sex. Seeing my sister in such a lewd state, I got an erection regardless of my will. During sex with the old man, my sister and I made eye contact, and I confronted her afterwards...