Dexxxter's Laboratory.

Dexxxter is worried in search of a supplement that will make his cock grow, making thousands of attempts in his laboratory in the basement of his house. Suddenly, his stepsister De De, a restless and naughty blonde girl with a beautiful tight anus, enters. Because she is bothering Dexxxter, she mixes the wrong components that make a magical reaction, this makes Dexxxter use it and test it on her. making his penis get harder and thicker, with that new desire Dexxxter uses it with his tender stepsister, fucking her very well in the ass, leaving all his cum inside her tight and pink anus. It is clear that this substance created by mistake worked well.