I used the hypnotic spray that everyone in the alley had been talking about, half-jokingly saying, "Become a perverted woman," to my older sister who treated me like an idiot. I actually got hypnotized, but I didn't know how to undo it. And so, my sister played with my penis. (YSN-386)

From the beginning, as the younger brother, I was treated like an idiot by my older sister with a bad mentality, and used to relieve stress. The resentment accumulated over the days, and she tried using the hypnotic spray that was rumored on the street, saying half-jokingly, "Turn into a perverted woman for me." Immediately, her head lowered, and without hesitation, her tender hole began to leak lustful juices. Then, she swallowed my penis while dripping with saliva, sat on my face, and unexpectedly, my penis became erect and was played with by my sister to her heart's content.