He makes Eric a cuck

John targeted Eric as his next target for change. "Why does it take so long to find a perfect statement for this situation", mumbled John. It took him longer, but he finally managed to find a perfect statement for a change: 'Eric Malcolm is turned on by watching hard-core porn.'

He hoped, that the change in his porn preference will also change his sexual behavior. John switched his previous hard-core porn preference to something more fitting. He confirmed a new statement: 'Eric Malcolm is turned on by watching cuck-old porn.'

It took a few seconds and they changed a little. "I cannot believe my big bro will take my anal virginity directly in front of you. I can see you are completely hard to watch me getting fucked.", commented Kate. "I love that you confessed to me you like stuff like this. I can make it just like a video you posted to me yesterday."

"He will be perfect for you," Eric mumbled as he had his head buried deep in her ass.

John imagined what comes next. He will fuck her in the ass just in front of her boyfriend and he will like it. And this made him painfully hard. He cannot take it any longer. He knocks on a door to let them know he is there. "I can see you made a lovely foreplay." he welcomes them.

Both of them freeze in shock. "Hey, bro. It's nice to see you there." Kate hugs him, pressing her small tits to his chest. She kisses his cheek and with a seductive tone, she whispers. "You can stick your yummy dick inside my ass. It's perfectly lubed for you, thanks to Eric."

She turns around and commands Eric. "You will be sitting on the ground watching John deflowering my lovely hole."

"Yes, my love. Everything for you." Mumbles Eric as he sits on the ground with his dick painfully hard.

"And no touching! That also includes your dick." He does not respond to her command, he just smiles back.

'Wow! She loves to humiliate and dominate him. Poor boy. He lost - my gain', thinks John as he pushes his sister onto a bed. She moves into a position that presents her bare ass. John lies down alongside her and runs his fingers around her anal hole. "You are completely wet down there, sis."

"Eric lubed my ass over half an hour just for you." Kate sensually replies.

John slowly moves his cock onward to her anus. There he stops and gently massages her entrance with the tip of his dick. "Oh! I cannot resist. Push it deep inside my hungry ass, bro. I'm ready..."

John does as she said and with a swift motion he impales her. His dick slides perfectly into her lubed ass. Her inner walls perfectly take all of his lengths and quickly adjusted for his dick. "You are so big, bro. And it feels so good." She moans and John starts to pump faster and faster. John remembers he made her ass very expandable and that made it so easy for him to enter her.

Meanwhile, Eric just sits down there and licks the tips of her fingers. His lovely girlfriend is fucked by another man. And he even takes her virginity alongside this! This makes him painfully hard but it's the situation he always dreamed about. But to his predicament, he cannot relieve the tension he builds by licking her ass.

Kate enjoys every moment her brother's big cock slides up and down her ass. Her ass was in perfect shape for his lovely tool. "Your dick is best, bro! I'll need it every day from now on."

John can't believe he is lasting this long, but he feels he is on the edge of cumming. He is on the edge of physical pleasure, just like Kate. She becomes his perfect anal slut. And all thanks to his new app.

"I'm gonna cum, sis." He lets her know.

She squeezes his dick with her inner walls. "Oh, John! I'm gonna cum too! Fill me up!"

He burst deeply inside her ass. She moans in pleasure and her body shakes as she orgasms at the same time. He pulls up and they both collapse on a bed. Cum slowly drips out of her, making a mess on John's sheets.