Family in a Bunker

"It was."

"I needed some apocalypse fucking," Anne said. "I feel a hundred times better."

I held Anne close and softly stroked her hair as I watched her tits move with her breath. "I know what you mean. Same here. Everything just seems a little better."

A knock on the door interrupted us. Dad's voice made my heart jump into my throat. "Hey, y'all get dressed and come out here. We have to discuss this."

"Shit," we said in unison and hurriedly got dressed. I did take a few precious seconds to watch Anne's breasts bounce around as she put her clothes on, and then I opened our door.

Dad walked us to the living room. "So, it was very obvious what you two were doing."

"I'm so sorry Dad!"

"Don't be," he said. It stunned both of us. "Look, I had a feeling this might happen. It was a risk I considered when I got the bunker. Can't keep two healthy adults in this place with no sexual relief."

"You are two young adults trapped in a bunker with nobody but yourselves and us," Mom said. "Dad satisfies me, but it's only natural that you two would get so sexually frustrated. I thought it'd take longer though."

"Three days seems short," Anne said. "But there's no end in sight. He'll be the only guy for a long time."

"Possibly forever," Dad said with a nod. "Understandable. I do have one request though."

Dad took a deep breath before continuing. "Having a baby down here would not be good, especially an inbred baby. I'm going to have to ask, did you finish inside?"

I hesitated before confessing to cumming inside my sister. Dad sighed. "Please don't ever do that again. I packed emergency condoms, which can be broken down and remade indefinitely by the 3D printer. I used them with your mom, but since you are fucking, you can use them too. Let's hope she doesn't get pregnant from this first time."

"I will." I breathed a sigh of relief. "I can't believe I just got permission to fuck my sister from you, Dad."

"It's the end of the world. Stranger things may yet come."