thesanstorm

“Oh, God...” she moaned, her eyes wide and fearful, but she didn't try to stop me as I climbed up and lowered myself into place against her mouth. And this time, since she had her hands free, I even got to enjoy her clutching at my butt! Daddy snuggled into place behind me just like last time, kissing my neck and playing with my titties. He'd had enough time to get hard again now, and he was rubbing pleasantly along the cleft of my ass. We'd definitely have to do something about that soon... but not just yet, not until Mommy was done making me cum again, first!

Sarah swallowed; her mouth suddenly dry with nervousness. She was sweating from the strain of holding herself in place, but that sudden slickness gave her an idea. Easing her pressure on the bed her body weight now mostly fell on her father, her breasts crushed against his chest. Pushing forward with her hands her body slipped an inch down her father, and that inch translated to an inch down below. It was more sudden than she intended, her father’s tip pushed fast and hard past her lips and into her dripping pussy. She moaned in ecstasy, unable to hold it in. She could feel him inside her now, stretching her opening and with it, feel the beat of his heart in her most sensitive place. She was on fire.

idk if you've played chaos;head (or watched it, I never saw it so idk if it's in the anime) but it's set in the same world as steins;gate (which I've watched but never played) and things the eyes see but the brain doesn't process are a literal plot point, you could almost certainly make a fairly lore accurate manip with that if you like this world.