What are we... It has been 7 years since we have had this kind of relationship with my brother. It is a secret I can't tell anyone, but... I didn't think things would end up like this... In her teenage years, an uncontrollable sexual desire came to my sister, Emma... boundaries that should not be crossed. The story of a brother and sister's sexuality. I made my sister hold a sex toy day after day... Just sucking and going beyond the line is something I cannot bear. She accepts it. My brother's sexual desire is accelerating. Seven years of fleeting brotherhood.