I hate my sister. Since her father was cut from the payroll, her income has become the main source of livelihood for the family. Since then, she has naturally become the "king" of the house, and the whole family – including me – has become a bunch of "slaves" under her command. One day, my friend sent me a bottle of a super strong aphrodisiac, a "prohibited item". Half joking, half true, with a little more intention to take revenge, I mixed it 100 times thicker and secretly gave it to her to drink. Result? My sister was so "fat" that she lost control, turned into a weak "prey", easily subdued. Even though it's my younger brother, I still can't help it... "hard" always and incest with my sister!