You get interrupted

“Bill!” You suddenly hear a woman yell behind you.
You turn your head, still naked on Billy’s dick and see a woman holding a bag of flour. That must be the blacksmith’s wife. She had long blonde hair and appeared the be 4 months far with a pregnancy. You don’t blame the woman. You experienced Billy’s dick yourself just now. You can see how she kept spreading her legs for it despite the risk of pregnancy.
“You asshole!” The woman yelled. “I left my family in the city for this? So you could screw around with women who aren’t even from this village behind my back?!”
“Maya, I can explain …” Billy said.
You get up from Billy’s dick, his sperm leaking from your well fucked pussy and walk over to Maya.
“You don’t need to explain anything!” Maya yelled. “I saw you cheating on me!”
Sabine then grabs Maya by the hair and pulls her head back.
“Oh, shut up, will you.” You say and push your tongue into her mouth.
Maya first struggles, but as your toxins flow into her body she stops fighting back. In the meantime, you put a hand on one of Maya’s breasts. As you kneed it Maya stops fighting you, then puts her own hand on yours and motivates you to massage her breast.

When you break the kiss, Maya is like putty in your hands. You strip off her clothes and admire her naked body.
You place a hand on her pregnant belly, then place it on your own. To think one day yours will swell up just like hers.
You motion for Billy to join you. He comes to you, dick still hard, and kisses you. With both of them now fully intoxicated with lust, you transform into your succubus form.
You push Maya on hands and knees and take place behind her. Then you line up your daemonic dick with her city-girl pussy and slide inside.
“Maya, look at that.” You say. “Cheating on your husband. How shameful is that.”
“I’m sorry, Bill.” Maya says. “I can’t help myself. I just need it so bad.”
“Don’t worry, Maya.” Billy says as he takes place in front of Maya and offers his dick to her.
Maya wastes no more words and takes Billy’s dick in her mouth.

The two of you spit roast the once faithful wife between you two until Billy cums. He spills his seed inside Maya’s mouth, which she has difficulty swallowing. Then Billy comes around and starts sucking on your breasts.
You open your mouth to stop him, but the part of you that wants to fuck a baby inside a female Billy holds you back. Soon Billy’s features begin to soften and his chest starts to swell.
The more Billy transforms, the hornyer you become and the harsher you fuck Maya. When Billy starts masturbating his shrinking dick you can’t hold it in anymore and fill Maya’s pregnant womb with your daemon sperm.

There were a few things about daemon sperm you knew, thought to you by the order of the Burning Rose. But one thing you didn’t know was it’s incredibly corrupting essence. When your daemon sperm discovered the fetus Maya was carrying, they invaded. Every one of your sperm cells merged with one of the fetus’s cells, making it daemonic. Then that corrupted cell corrupted the cells next to it, and those next to them. Soon Billy’s baby was gone, destroyed and replaced by yours. Once that happened, a pentagram appeared on Maya’s pregnant belly, marking her as yours.