"Really, Lucario?" Mawile asked her older twin brother incredulously. "You don't have to pull out just because I might get pregnant."

"I just...I don't want to be responsible for another life," Lucario said, averting his gaze.

"You don't have to be," Mawile said. "I can take care of a child on my own, you know. I'm not some helpless little girl."

"I know," Lucario said. "It's just...I don't want to take that chance."

" Lucario, I'm your sister," Mawile said. "I love you. And I know you love me. But this is my body, and I make the decisions about it. So please, just cum inside me. It's okay."

Lucario hesitated for a moment, before finally giving in. "All right," he said. "If you're sure."

And so it was that Lucario cummed inside his sister's pussy, without a condom, without pulling out. And Mawile didn't mind one bit. Because she knew that this was her body, and she could make whatever decisions she wanted about it.