ben 10 gwen tennyson

“No?” She asked, clearly surprised. “Okay sweetie, I won't, if that's what you want. But do you mind if I ask why? We could not tell him about you and Brucie, if you're afraid how he would react... though I'm sure he'd get over it quickly, once he saw how hot you are, doing it! But you have to know he wouldn't have a problem with you and Daddy, not after everything he's been doing to me all these years! Even if you don't want to do anything with him yourself, I know how much he would love getting to watch, if you'd let him.”

We eventually pried ourselves out of bed, performing a much-needed changing of the sheets and then trooping into the bathroom together, taking care of the necessaries and enjoying a soft, playful shower. It was a little bit crowded, with all three of us in there at once, but I loved every moment of it, and we only came out again once we ran out of hot water and Mom and I had started to shiver from the cold. We dried each other off, snuggling and warming up, then climbed into bed, Mom insisting I take the middle.

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.