A responsible and beautiful older sister who works in place of our parents and handles the housework. One day, when I returned home, I saw my sister calling a neighborhood old man 'Master' and begging, 'Please let me lick... Let me lick your dick,' as she indulged in absolute submission sex. Seeing my sister in such a lewd state, I involuntarily got an erection. During the sex with the old man, our eyes met, and afterward, I confronted her…
