My cousin Jun, a college student, came to stay at my place in Tokyo during her break. She used to be a beautiful, innocent, and delicate girl, but meeting her again after several years, I found her even more attractive, now mature and alluring. However, I soon discovered she had secretly become an insatiable, lustful girl obsessed with cock and sex. She grew bolder by the day—finding my hidden porn stash, changing into sexy outfits, and pressing close to seduce me.