"Are you ready for it?" Kyousuke searched his sister's face. She looked content enough, with flushed cheeks and a dreamy smile on her face. "If it feels uncomfortable, just say so." He wouldn't want his own little sister being hurt.
"Yeah, I'm ready. Let's get on with it already."
"Okay." Kyousuke pressed closer against her slender body, brushing his lips against Rin's. He ran his hand along her swathes of long, brown hair down to her back, tracing along the curve of her spine.
Riki coiled around Rin from behind, burying his face in the back of her neck, and gently gripped her hip. He felt the warmth of Kyousuke's hand as it came to rest on his own.
Rin let out a soft gasp, her body tensing up.
"Is it hurting?" Riki asked anxiously.
"No... keep going."
And so it began, the sinful act of making love. Even Riki, who had finally come around to accept the siblings' great taboo, was here, joining them in what was a treasured moment. Others would see it as wrong but none of them cared about that. All that mattered was that they loved each other.