Speaking of corpse fucking and space sex, it reminded me of my desire to fuck Nico all throughout the universe and monster space.
How I imagine it working would be her making her 6 rings float around them like a Dyson sphere or like how she wrapped them around Alice's graviton but much larger. She pulls the MC inside of it and they fuck. Nico's power leaks causing her rings to change their position in space and since MC is a Level 3(or 4?) when the scene happens, she doesn't have to hold back. Their sex would literally be out of this world. For shits and giggles, have the MC's memory trait accidentally fuck with Nico's ring and have them teleport in front of Mommy.
Honestly, I think Nico sleeps between her rings and they teleport her around constantly or isolate her from space. So she can't be attacked while her guard is down. I also still think she has an abandoned M-33 Dimensional space somewhere as a backup in case shit goes left. Especially now that she's Level 5. She can probably take over an abandoned one. She's not hosting it herself but she can come and go as she pleases. If she doesn't have one currently, I feel she will after she kills Hex, since it's a S-Rank and it's dimension possibly can linger in existence until it's destroyed.