Elizabeth

I remember reading this yaoi about like a devil and an angel and they both got trapped in a dungeon kinda place and there was tenticles and it was doing stuff to the devil guy and not doing stuff to the angel and the angel was just like watching and the tenticle monster like planted seeds inside of the devil and then both the angel and devil were going around and helping the other like monsters and doing the same stuff with the devil but like he’s like half devil I think and the monsters can only plant seeds inside devils so that’s why they were helping. Can someone pls let me know the name of this