RE: Panther Siblings (D.E 666 and Kakure)
He did his best to keep his sister on her feet as he felt her legs shake, he didn't want er collapsing or anyhting. "NNh....s..sis...I'm close," he said feeling he was going to burst, his claws digging into her skin a little bit just to hold on but not to draw blood. He fucked her ass harder, pushing in a bit deeper. He wasn't sure to release inside, though he saw no harm since she couldn't get pregnent this way.