The following story has yiff in it, which you probably expected since I don't know how else you got to it other than a naughty website unless someone stole this story and posted it elsewhere (in that case fuck you stealing people). If you are under the age of 18 (or whatever the legal age of reading porn is where you are) then you should not read it because you'll get in trouble if you do. I know this won't stop anyone but at least i won't be held accountable (Yay)

The following story also has dark and harsh fetishes in it. It is meant to be only a fictional fantasy. Some things in the story would be dangerous to even play-act out. Respect Safe words and Continue reading at your own peril. 

Story Written by Jake Brian Purplecat

----------------------------------

Shinu Twins The Demon Siblings – Chapter 1 Imp Beginnings

----------------------------------

	

	Dark gray flames sparked into the dark room, forming into the smooth flesh of two little demons. A pair of siblings who were sinful in their mortal life now a pair of demon siblings. Lace had chosen to become a succubus, and her brother Rain an incubus. 
	Being sex demons they allowed themselves to be summoned by mortals looking to make magical contracts. It was their very first time returning to the realm of the living, their first customers. A couple kneeling before the circle they appeared in. A canine and feline respectively. 
	“Hello mortals,” Lace spoke in a sinister but alluring voice, “What have you summoned us for?” The pair seemed stunned that it had worked, or maybe that they had gotten two imps. “We... We were hoping that we could be granted a new body.” It was obvious the couple hadn't done anything like this before. The tom cat was fidgety and nervous. His dog wife didn't show it as much but looked afraid.
	“I think we can do that but I'd like to know why.” Lace responded as her brother started writing up a contract. “Well we're very close and love each other but we want to be closer. Marriage isn't good enough, to be truly a brother and sister is what we yearn for. Either making me a cat like him, or him a dog like me, either is fine to us as long as our blood is shared.” 
	Rain looked to his sister. Wondering if it was coincidence or fate that made their first summoners have a desire for incest. Perhaps the system just put like minded demons and summoners together? It suited him just fine as he put more fine details into the agreement to reflect the exact desires they had. “As long as you're both of the same blood, would being a different species entirely be an issue?” The couple took a minute to talk quietly before answering that they'd be happy as long as they're brother and sister. 

	Once the contract was written up the mortals looked it over. Rain and Lace were a little surprised people so eager to have their bodies altered that they'd summon demons to do it would be so thorough about reading a contract. Guess when you're literally signing away your soul some people actually care to read the fine print. Finally the two had signed away on the magical paper, sealing their fates to that of the demons.
	In exchange for being made into a pair of flesh and blood siblings they had agreed to give their souls to direct custody of Lace and Rain. A contract like this would normally only cost a single soul but why split up people that so wanted to be together? Especially when two instead of just one made them more powerful anyway.
	“Ok, so to start the body changing ritual we'll need you to get naked. I'm sure you know what to do from there.” The gray imps smiled as the two stripped slowly, a bit shy around their new owners. Coming together and kissing as they groped their mate, getting more in the mood. 
	The cat pinned his wife against the wall, thrusting into her hard. Fucking his wife harder than they had done it in their life. Celebrating their success with the roughest sex in their whole marriage. Crying out in a mix of pain and pleasure. Soon she was getting filled with cum and they slumped to the ground.
	The two demons looked over the exhausted couple. “Well sis, looks like this pussy and bitch are ready to be converted.” Lace reached down her body and spread her pussy wide. In fact it was unnaturally wide. 
	“Come on, this is part of changing you so you'll need to get inside me.” At first they were hesitant, unsure if they could fit even if they wanted. But first the husband crawled over to her and climbed inside of Lace. His wife followed after, their bodies stretching out the poor imp's body. Once both of their bodies fully rested inside her with nothing sticking out, she groaned at the pain.
	 Lace stopped hovering and laid down on the floor. Glowing patterns showed up on her stomach and it started shrinking down in size. Sounds of crunching bone and sloshing liquid nearly drowned out the screaming of the couple. Finally her stomach was nearly normal but had two dots of light on the front indicating the souls inside her womb.
	Rain went over and hugged his sister. “You alright now? Looked like that hurt for a minute.” She nodded to him smiling. “I am, and so are they... now they are processed into demon eggs. Only one step left before they can be birthed as true family.” Rain understood and slid his barbed demon dick inside of her. Humping his sister and kissing her lovingly. Fading out of the mortal realm and back to demon world still fucking each other.

	A few days later her belly had grown a bit big again. Two little demons being birthed onto the warm ground of the underworld. Looking like a mixture of feline and canine, but mostly demon like their new parents. Once they got used to their new bodies they were fucking like crazy.
	“Isn't it nice Lace? Not only do we have the first two additions to our new demon following, but they're our children as well. Acting just like us.” Rain teased his sister as they watched, hoping they'd get summoned again soon to recruit more. “It is nice, maybe one day we can grow this to a true empire... but this humble beginning is fine for now.”