Dipper Pines had messed with the paranormal before, more specifically the other worldly beings such as good and bad- demons and ghosts and whatever else may be roaming on a dimensional plain intertwines with ours but like a one-sided mirror. But just because he thought he had a grasp on it, didn't mean he did; and he was about to find that one out for himself. The candles were in a circle neatly, the rune drawn on the floor of the attic, several summoning objects at their respected places, and for extra protection he had an outer circle barrier of salt (he saw that once in a movie, and all the movies did it too, he also saw online that salt was a protection element, it had to be true, right?) He stood outside of the two circles as he flipped through his book, the inked words in another tongue that he truly didn't understand to the extent of them, but just enough to never speak them aloud unless he was prepared enough to do so. The words rolled off his tongue, falling from his lips and echoed through the room, a small summoning chant. The last word was spoken and he looked around. The flames were flickering, the room still colored, and everything just as it should. Nothing.
He sighed loudly and tried again; maybe he did it wrong? No, no he was doing this right! He's done it before! Like, once before, he was a pro at this. He took in a breath of air and begun to read the page again, this time louder and his words enunciated perfectly. He wasn't even done with the last sentence when the candles all died simultaneously. The smoke lacing through the still air. The lines of the run lit up, illuminating a hellish gold before they seemed to fade into a void, before the voided space was filled with clashing colors of vivid reds, yellows, golds, oranges. Dipper's eyes widened in confusion. That… That was new. Last time that didn't happen at all, it was just a simple little sprite that formed from the smoke of the candles in the center of the rune. He felt scared, and that feeling only increased when he saw to arms slither through the portal and claw like hands slam down onto the attic floor to help hoist whatever the hell he had summon into the realm. He heard a laugh, no that wasn't a laugh, that was a cackle of some sort. The being looked… Well, human. Until it opened their eyes and narrowed his thinly slit pupils at him, irises glowing gold. He smiled, pulling himself completely up and the floor connecting and closing beneath his feet. He never took his eyes off of the mortal.
He looked around the attic room, and hummed, his gaze returning to Dipper as he face split into a wide smile, jagged narrow teeth displaying in a manner that reminded Dipper of something far worse than a wolf, "Well, and what do I owe this wonderful summoning? By the way, I heard you the first time, there was no need to yell at me. I was in fact doing something. It's like you kids have no patience at all, we're not here for you to just call at and we'll come like a dog and drop everything just for some dumb human."
Dipper didn't say anything, even though he wanted to. Swallowing down his urge to yell at the demon for calling him stupid.
He laughed, speaking in a point-blank tone, "Oh, you are very stupid. Just like the rest. Read one thing on the internet and you think you can connect with the spirits. It's all fucking bullshit. But I'm sure you know that, now. Awww, what's that look for? Expecting something else?"
"Y-you…" Dipper found his voice sheepishly, "Weren't supposed to- I don't know who-what you are…"
The demon approached him with his wide smile, his height making it easy to tower over him even when he was slouching over. He brought his hand up when he wasn't even a foot away from the human, "The name's Bill Cipher, and let's just leave it at that."
Dipper's eyes widened in horror. Not over the demon's name or anything, he had no idea what that even meant. Taking steps back as he stared at the way the demon had so easily stepped outside of the rune circle and over the second barrier. Bill seemed to notice the way the other was staring at his feet. He stood up straight and scoffed a laugh, dragging his foot over the salt and disrupting the connecting circle to be open now, "Oh please, really? Salt? Come on. That's novice shit right there, I'm far out of your knowledge rank."
"I don't," Dipper looked up at him, eyebrows knitted in confusion, "Understand…"
"You don't need to," the demon walked around, staring the human up and down before speaking in a low voice, "You know, I don't think that's really polite…. I told you my name. What do they call you?"
Dipper swallowed, debating on whether or not he should before he heard a loud click of a tongue.
"Okay, I don't need a name, Pine Tree," Bill stepped around him. He felt like he couldn't move at all in the presence of a demon. Suddenly he winced when he felt cold burning hands on his shoulders, "You don't even know why you summoned me, do you?"
Shit. Why did he summon him? Why did he decide to summon anything at all? What was his plan? Was he just bored or something?
"I don't… I don't know…"
"You're wasting my time then? You just wanted to see if this summoning junk was real or something?" his nails dug into the other's shirt, "Really? How rude. I'm a very busy man and don't have time for nonsense like this."
Dipper's blood ran cold when he felt one of those hands come up to his jaw and grip tightly, tilting his head to the side as a long hot tongue flicked up his neck, "You know, unless you do make this worth my while~…"
Oh God what did Dipper just get himself into…
His dark eyes squeezed shut as he let out a choked groan as he felt sharp teeth dig into his flesh, grimacing at the pain. Next thing he knew he had his back shoved against some of the boxes, his wrists pinned above his head in a bruising grip as he stared up at the predatory gaze of the demon.
Bill licked his lips, even though he wasn't going to give the human an option, he asked anyway, "What do you say?"
Dipper only swallowed, his voice lost in the other's looming presence. Bill chuckled lowly. He leaned down for a hard kiss, teeth clicking together without a care as he forced his tongue into the human's mouth. Dipper's eyes squeezed shut. The other had easily dominated over him, forcing his tongue farther into his mouth and nearly down his own throat. Jesus Christ how long was that thing? He snorted a bit. His snort was followed with a hard grind of their hips, Bill pressing his hips against his own. Dipper couldn't help but moan into the kiss at the sudden harsh friction. Bill had dropped one hand from his grip, still easily holding the human's wrists in a single hand. He brought it down to harshly hoist the other's legs to wrap around his hips, pulling away from the kiss with a small laugh.
"Come on, hook your legs, do I gotta show you how to do everything here?"
Dipper simply swallowed his saliva, his body working against himself as he pulled the other closer to him when he began to grind their hips together again. The demon only laughed some more. Taking his now free hand he cupped the mortal's face again and pushed it to the side, exposing his neck as he skipped the kisses to go right to biting and harshly marking him. A small pleased groan slipped through Dipper's lips as he tilted his head more, feeling those lips against his flesh turn upwards into a smile at his compliance. He dropped his head, moving to grip along the hem of his shirt and tugging hard enough to rip the seams, the tearing echoing through both their ears as he was given more room to work with. Dipper balled up his fists as he tightened his jaw to stop those damn sounds that threatened to escape his throat. But it was useless, a hard and slow grind of their hips had Dipper moaning despite himself, earning a low chuckle from the demon.
Bill pulled away, both hands removing from Dipper. But it was only for a second before those hands were flipping him around to face the boxes. Bill leaned and put his weight on him, smiling widely and huffing in the human's ear as he pushed his shorts down his legs along with his boxers. Dipper hissed in a breath through his teeth as he felt cool air hit his semi-hard arousal. Sliding one hand underneath his shirt to shove two fingers into the human's mouth, Bill's other hand slipped to grip at his now free cock, nibbling on the shell of his ear as he pumped along his shaft. Dipper shuddered at the pleasant feeling of direct contact, though the knowledge of who-what it was touching him was… Unnerving. A conflicting thought. This entire damn situation was conflicting…
"Don't think about it then," Bill's voice was deeper than before as he breathed in his ear, grinding his hips against his backside once.
Dipper's hands simply gripped the nearest thing tightly; the edge of one of the boxes. He bit down on the fingers in his mouth, not enough to really do anything but enough to get the demon to remove his hand from his cock to slap his bare thigh hard followed by a growl. Oddly it made Dipper want to bite him again, but didn't dare. Instead he sucked on the fingers, swirling his fingers arounds them. Bill didn't bring his hand back to the human's prick, instead he placed it against the area he had just slapped. Watching the red hue of the human's face, the way his throat would move when he swallowed, digging his fingers into his thigh when he looked over at him from the corner of his eye.
He licked his lips lazily, "You know, I wonder how that mouth would work around something… More interesting."
The fingers form his mouth were removed, allowing him to question, "W-what do you mean…?"
He swallowed at the first thing he thought the other meant, but instead of being shoved onto his knees he felt something else slide up his torso. He twitched at the odd feeling. It was smooth and slick to the touch, though he wasn't sure if it actually was or not. He felt the other's hand move completely away from his neck and chest, slipping from beneath his shirt. He felt something up against his lips, confusion washing over him as he stared over at the deviously smiling demon.
"Open wide, sweetheart."
When Dipper didn't at the command the tentacle simply forced its way inside his mouth. God it was such a weird feeling… It moved and swirled just like a tongue, but it was far thicker than one, pulling back and thrusting back into his mouth. His nails dug into the cardboard, knowing his debating thought was heard when those claw-like hands were digging painfully into his skin again. Deciding to simply relax his jaw as best he could and close his eyes, his ears picked up the soft sigh from the demon. Bill braved himself on an elbow against one of the boxes, the feeling of the other's warm mouth around one of his tentacles was… Amazing. Dipper pushed his hips back against the other's when he felt the demon's clothed hard arousal against his backside, earning a soft moan from him. When he decided to rolled them back again and get the same reaction, he opened his eyes to see the demon biting his bottom lip and smiling at him. Bill moved where he was standing to the side a bit, leaning with his arm against the boxes as his other hand moved to lift one of Dipper's legs. Dipper's eyes widened when he felt an oddly burning static feeling prick along his tailbone and spreading all over his lower half, dying down quickly before he felt something slick against his entrance. It only teased for a moment before pushing inside of him, his fear turning into confusion when he felt hardly any pain at all. His eyebrows knitted together as he looked over at the other as best he could.
"What?" Bill laughed at the look on his face, "Come on, I'm a demon, don't act so surprised over stuff. Focus on that mouthful of yours."
Already Dipper's leg was shaking. His eyes were closed again as he sucked as best he could along the tendril thrusting in and out of his mouth, a sickly sweet liquid dripping down his throat, clear drops falling from his lips. Bill's eyes slide closed as he focused on both of his tentacles, the tight heat around one and that damnable tongue swirling around the other. He stopped bracing himself to push his forearm down on the mortal's back and lean against him, pushing his hips against his leg. Honestly Dipper had no idea how he was still standing, but he was. The tentacle fucking him would pull back before thrusting back in hard, curling and wriggling before doing the repeating the action. He was already quietly moaning around the mouthful before the tendril slammed right against his sweet spot and got him to choke a loud moan as his eyes widen. Bill laughed shakily, making sure he'd push his appendage directly in that same spot. His fingertips dug into the back of the other's knee as he began to grind his hips in a steady rhythm against his leg.
Abruptly the tentacle pulled completely out of his mouth, a mixture of saliva and other slick fluids dripping from Dipper's mouth as his whine turned into an outright moan, "AAh-hnnnnn!"
The tendril moved to join the other one, Dipper's nails digging into the box he held onto as he felt himself stretch even more. Bill dropped the other's leg, and Dipper placed his foot firmly on the floor with his legs still spread enough. He hiccupped a laugh, when one tentacle pulled back the other thrust hard inside of him, making him feel completely full. He couldn't even keep up with their game anymore.
"F-uck! Bill~! Bill ri-ight the-ere~!" He pushed his hips back against his demon's tendrils, hearing him laugh behind him but doing as he was told.
God he was close, so close. The burning heat coiling tightly in his abdomen, whining loud pleas and moans that encouraged the other. Bill knitted his eyebrows together as he continued to both fuck and grind against his human, every word and sound that fell from his mouth going straight down his spine.
"B-ill, I'm so-OH- close," Dipper keened, his toes curling as he pushed his hips back, "Com-e on, a lit-tle bit mo-re. I'm gonna-a cum."
The demon buried his face into his human's back, his hand coming up to grip onto his side as he groaned, "F-fuck… I'm close too, Sapling.."
Dipper dropped onto his elbows, enjoying every moment of being fucked by his demon's tentacles and never wanting it to end. But he knew that it would, and though he was in a way disappointed he couldn't wait. Because when it did end the coil in his stomach would finally release. And that moment couldn't come any sooner. Crying out his lover's name loudly as he came hard, his head falling as he rode his orgasm. Bill wasn't far behind him, biting into the man's shirt as he hissed, cumming in his slacks as his tentacles released deep inside of him. Dipper breathing a sharp gasp at the warm feeling.
Once the tendrils pulled slowly out of him he allowed his knees to buckle, collapsing down onto the attic floor. Bill instead carefully sat down next to him, leaning his back against the boxes as he looked at the other, who was still trying to catch his breath.
"Well, you sure got into it," Bill carefully grabbed the other and maneuvered him to lay with his head in his lap, raking his fingers through the brunette's hair.
He sighed but smiled, "Shut up… You're buying me a new shirt."
"And you're buying me new slacks."
"I am not! Do you have any idea how much those cost?" Dipper protested, "And you have weird measurements, it'd cost me a fortune."
Bill simply laughed, leaning down and placing a lingering kiss to his human's temple, "I love you."
Dipper hummed, quieting down instantly as the other's calm and relaxed demeanor. Once the man pulled away, the younger placed their hands together, observing the difference before entwining their fingers together, "I love you too."