His father walks in

While Kentaro feverishly worked her body, the sound of the sliding door behind them caused him to stop and look over his shoulder. His father stood there completely surprised at what he was seeing. Closing the door quickly behind him, he glowered at his son and his sister.

“What the fuck is going on here?” He growled in anger.

His eyes went wide seeing who the woman was and he immediately began searching the room for something with his eyes. When they fell upon on the trinket still lying next to the two of them, something changed. Kentaro watched as his father’s shoulders dropped, his face relaxed, and his eyes started to whirl almost imperceptibly. A wolfish grin grew across his father’s face and the two men locked eyes.

In that moment, Kentaro knew the secret lust his father held for Kentaro’s sister. And he knew this wasn’t the first time he’d seen her naked. An unspoken plan passed between them and Kentaro turned back to look at his sister as their father began to remove his clothing. She looked back at him, unsure what was about to happen, but when Kentaro began to move her, she didn’t fight him.

His sister arranged herself on the tatami floor as Kentaro directed her with his hands and she looked back at him. He gave her a smile and knelt down, sliding his cock deep into her pussy. She started to protest, but stopped when her father grabbed her head. Kentaro watched as his father grabbed his sister’s head forcefully and pushed his cock into her mouth.

His sister let out a muffled moan, her mouth filled with her father’s cock. His father began to work himself in and out of her, causing his sister to move up and down on Kentaro’s dick. Kentaro reached down and grabbed her hips, but allowed his father to direct the movements. Catching the rhythm, Kentaro moved with his father, crushing and stretching his sister in unison with his father. To her credit, she remained still, letting the two men use her.

“Good girl, Neechan,” Kentaro said, stroking her back.

She moaned with pleasure and relaxed her muscles. Kentaro placed his hands so that he could start fucking her hard, filling the room with wet sounds as his cock pumped aggressively into her. His father leaned in, putting all his weight on her head as he shoved her down to take all of his into her throat. She collapsed and both men when with her, pinning her to the tatami while they used her as a sex toy.

Both Kentaro and his father began to pant and moan loudly, expressing their appreciation of her body with their reactions to fucking her. She laid there, opening her throat and pussy to them, letting them take her together.

Kentaro and his father locked eyes again and they shared an agreement that they would count each other on equal ground from this day forward, both of them having Kentaro’s sister as their bitch, to love her freely when they chose and together if necessary. They nodded their agreement and both of them let themselves get to the edge of their orgasm.