The sister, drugged with an aphrodisiac cream by her twisted brother, becomes as lustful as a female dog. When she takes her brother's penis into her mouth or when he twists it deep into her vagina, the drug's effect forces her to naturally expose a lewd expression, drooling messily. The more intensely her brother thrusts, the more love juice she drips, repeatedly engaging in thick kisses, and receiving a rich load deep into her vagina.
