There's just one thing to do.
I begin carving runes into my skin with a sterilized ritual hook.
I give my son some painkillers and carve him some, too.
I then begin to chalk wards around the house.
A law enforcement officer walks up and asks me what I'm doing.
"Will-based anti Mamono-mana runes, keeps the unwanted neighbors out."
The dark elf pulls out a pair of fuzzy handcuffs, and slowly begins her approach.
I remain calm, and continue to concentrate on inscribing the proper runes to make the chalk designs sufficiently water and scratch-proof.
She breathes gently into my ear, sensuality dripping from her words.
"Sorry, handsome, but that's against the law, you'll have to come with me."
I tilt my head, curious.
"You do realize that these sorts of things have a minimum safe distance, right?"
No response, and then a loud thud.
She's collapsed onto the lawn, twitching and moaning as a black smoke seeps out of her every orifice.
That'll teach her not to mess with a man who studied runework instead of eyeing up his teacher.
I wait a good five minutes, scrawling runes all the while.
Once the runes circle the house in two thick bands, I gently roll her onto her back and carry her to the end of the driveway.
She should recover just fine out here.
I go to check my mail, and then a succubus lands right next to me.
"You smeel single, and is that your son I sense inside your house? Must be awful lonely, perhaps my daughters could get hitched to you hunks?"
"Not interested, lady."
A younger looking, more curvy succubus landed behind her mother.
"You sure, sweetie? I think my daughters heard a yes."
"You're welcome to try, but I seriously doubt you'll make it indoors."
"Locks won't keep us out, human. We get any man we want now."
Her daughters flew for the door with, of all things, a battering ram.
"I didn't lock the house!"
But it didn't matter anyway, they were in a worse state than that kinky officer before they even got positioned to ram the door.
I walked up to their mother, and pulled her into a tight embrace, a thick cloud of that black smoke gushed from her and flew into the summer breeze.
I looked around, no witnesses.
I slowly dragged her and her daughters into the cellar.
Two months later.
"I'm going to check on our 'guests' son."
"Okay, daddy!"
I descended into the cellar, and sure enough, there they sat, the succubi, a shirohebi, a ryu, a wurm, an alraune, a dark mage, a mindflayer, and a hakutaku.
The stone brick walls were rough with miniscule engraved runes, staring too long would cause migraines to prevent any copycats.
I looked over my latest catches, the darkness had faded from their wings, and they had begun to grow soft coats of fur.
The shirohebi's scales had long gone black, her fangs now so large as to impede her speech and force her to slurp her words.
The wurm and ryu had suffered similar disfigurements, their bodies growing ravenous for sex and spirit energy.
The three snakelike mamono had begun to develop aphrodisiac venom and saliva.
The mindflayer had been reduced to a gibbering mess, her body sprouting more tentacles in a vain attempt to reach out, grasp, and pleasure.
The hakutaku had not fared much better, her horns had grown long, and her wit dull, most of her knowledge had passed on to me, what was left to me was a beautiful husk, her personality more violent, but in tact and inarticulate.
They were all needy.
I obliged of course, as did my son, but due to all of the siphoning runes, any ground tgey gained slipped right through their fingers.
They could do nothing but constantly attempt to relieve their needs alone, which never satisfied them.
It all paid off when the hakutaku gave birth to a boy.