I was so looking forward to it. I was desperate for some relief. I was hopping that she would let me jerk off one damn fucking time. I could barely sleep all night long. In the morning, when our parents were out, she called me over, into her room. When I was there, I had to be over there very fast, otherwise she would have gotten very angry, she ordered me to clean out my asshole. She showed me some tutorials for it. She handed me over the equipment. Then she sent me off into the bathroom.
When I came back to her room, she was ready too. She was wearing some tight fitting clothes and a strap on. Fuck she looked hot. She looked gorgeous. My dick desperately tried to get hard. He was constantly was leaking pre cum. Sis ordered me to undress myself. To kneel down in front of her. To suck on her strap on.
At first I only took the tip of it in my mouth. Not enough for my sister. She ordered me to take it deeper. So I did. She also ordered me to look her in the eyes while she rammed her strap on down my throat. I loved what she was doing. I gagged a lot onto her toy. Some tears were running down my cheeks. I lubed it up very good. I was so damn fucking horny. I was willing to do everything for a relieve.
Sis was pleased with my cock sucking. She called me a good boy. Then she ordered me on her bed, on all of my four, my ass pointing towards her. Then a well lubed strap on went up my ass. Gentle, slowly. To make me get used to it. Sis clearly knew what she was doing. After some time she began to fuck me. The dildo slowly sliding in and out of my former virgin ass felt great. It made me moan out loud.
Sis kept on getting faster. She went in deeper. With every thrust. My moans got louder, more intense. She kept on calling me a good boy. She even smacked my ass. I felt something was coming. Tension was building up in my body. Some inner heat came up. My dick was leaking pre cum. Then my legs, my whole body began to tremble. One more thrust. And boom. An incredible intense orgasm. My balls emptied themselves onto my sisters bed. I collapsed onto the mess I made. Fuck, I still was trembling. It felt awesome.
My sister gave me some time to regain myself. She smiled at me all the time. She called me her good boy. I was in heaven. Satisfied for the first time in months. But time to relax was over pretty soon. Sis began to give orders again: “Clean up the mess you made onto my bed. Change sheets. Now.”
I did as ordered. Still totally naked while doing so. While I was ad it, she came up with the following: “From now on, call me me mistress. When I give you an order, you confirm with yes mistress.”
“Yes sis, a sorry mistress.”
From that day on I really was her slave. She owned me. She controlled me. I loved it. She loved it too. But we had to be careful, very careful around our parents. But to be honest, with us two still living at home, together with them, it just was a matter of time until they found out about our relationship.