((This would be my first posted guro story... So if it's bad, please tell me so I'll stop writing >.> also, sorry in advance if it seems a little slow...))

I was always told of humans in the maternal plane; Of their soft skin, their warmth, and their unclenching loyalty when properly manipulated. Being a demon of one of the many hells, it was always just a myth to me, like a bedtime story I heard as a means to make us work harder during the day for the greater lords. Growing up around erinyes, it was never hard to hear lies all around the area of human flesh, of it's sweetness and purity, almost as close as angels themselves. I was still young and hopeful, and clearly gullible. Seeking a means to find a human myself, I ventured off to find any sort of portal that would lead me to thier exsistance...

My wings had not fully grown, but my breasts certainly had an average for many succubi of my age (time is always hard to tell though...)I had packed a few things, and left the city of Yrith to reach the upper hells. As I left the city, I heard a voice behind me. "Nii!! Wait for me!!" I looked behind to see a pure white slaad, shorter then most but still brawny. He was one of many creatures in the planes that was pathetic enough to fall to -any- succubi charms. I walked faster, but he kept pace. "Niva, please, let me come with you." He begged, walking beside me. I looked ahead. "No.. I don't want to be followed! What if someone sees us?!" It was forbidden for demons to leave freely, they were only to be summoned. Ancient laws, stupid things.

"I can't leave you alone, what if someone banishes you?" His nostrils flaired, and a low growl vibrated from his frogish neck. His fists clenched, with his tail very still. I looked ahead of us, seeing a small stone-tree forest. "Oh fine.. Why don't we rest then, since we walked so far?" I sneered. He looked at me strangly, but agreed.
We sat down on the forest, cold and filled with snow even through the stone needles of the pines. He closed his eyes, his hand moving slowly, whispering a small chant. A fire appeared in front of us, flickering in thin air. He smiled. I took off my packs, and took out my bedroll, and sat on it, staring at him. His black optic eyes, staring straight into my breasts. Then slowly down...
"Drig. You want me, don't you?" I was too annoyed to deal with the customeries.
"I-uh... Well, you are very commoningly-"
"So you do." I smiled.
"Well, yes... But I can't help it... You are..." His mouth slowly stopped moving as I moved my long black hair off my breasts. My nipples stood out from the cold, even through my black strip of tough hide leather holding them. I smiled from his pathetic infatuation. Getting up, I moved towards him, looking down at him, just sitting there, staring back. I felt his cold scaly skin against mine. His thorns spiked up, eyes shining and his tongue licking his sharp teeth.
I put my left foot on his knee. Digging my heel deep into his leg. The pain did not even make him flinch. I smiled. Kneeling down, I moved my face right against his. I smelled his breathe, which was close to charcoal. I moved my lips towards his ear, slowly scraping them across his face.
"Slaad, you are mine."
As I said this, I kicked my right knee up his chin. The crack of his jaw rumbled against my entire body, I felt a warm light throb around my inner thigh. A few feet away, he propped himself up. Blood slowly moving down his now mis-shapped mouth.
I slowly pulled my leather strap off my breasts, exposing them to the cold.
"Slaad, come here." I ordered.
He struggled a bit, but slowly walked towards me. Closing in my face to his, I licked the blood from his neck that had dripped. The iron taste rushed through me, licking the entire stream of it. I opened my mouth, letting the blood drip down to my breasts then to my nipples.
"Oohh... Hehe, there's just too little of it, no?" I giggled.
I lowered myself to him again, my mouth against his jaw. My lips against his. I sat down on him, his cock hard against me. I pressed my bloodied lips against his, moving my head hard to hear his jaw crack against my face. I felt the blood pouring inside my mouth, down to my breasts, and down to where his cock and now my went cunt was. I stopped, looking at his face momentarily.
I bit his lower lip, hard, piercing through his flesh, and quickly pulled down, tearing out his skin from his jaw. The blood splattered all over me, with the cold weather now nearly unrecognizable from his warm blood. I twisted my tongue around his skin. I pressed my thumbs against his lower jaw, deeper into his flesh, his throat vibrating what seemed to be a scream or an orgasm. I didn't care. I pressed my breasts against his chest, rubbing them up and down as I drove my thumbs into him. I licked his raw muscles, feeling every tendon, every vein, arteries. I moaned into his neck, taking one of my hands and digging my nails into his back.
"You wanted to go with me, Slaad." I said, my mouth dripping with his meat and blood." But I was not even close to putting my toy away...

((I'll continue it, if you guys like it. I know it's kinda light, and yeah, very crappy. But feel free to comment!))

Not bad, really. A few spelling errors here and there, but a good start. I will be happy to read any more you have to offer.

Keep going, it's interesting.