Dipper ran as fast as he could through the forest of Gravity Falls. There was no way in hell was he going to let Bill catch him he didn't want to be bond to a demon for all eternity. He ran until he was in the middle of a clearing he has never been to before. He heard a twig *snap* he whipped his around to find no one there.

   His heart started to pound as he heard Bill's laughter fill the clearing he still had 20 minutes left before he would win. "Pine Tree you won't win this I will have you weather you like it or not!" Bill's voice booms around him. He shivers from the way he said it.

   Dipper backs up slowly looking around for the insane now neko demon. He didn't see the tree root only a few steps behind him until he tripped and fall to the ground. Bill took this as a opportunity to pounce on the poor teenager pinning him to the forest floor with his tail and ears twitching in excitement. 'Guess this means I win Dipper' Bill said in a husky tone. Dipper blushed at the way he said his name. But then he remembered what was happening right now. He started to struggle in Bill's hold.

   Bill puts his knee against Dipper's crouch making him gasp. He then quickly kissed the poor boy putting his tongue in his mouth. Dipper face was a tomatoe and he was not ready for the kiss his mind was on over load with this situation his struggling was starting to falter.

  Bill smirked into the kiss and rolls up Dipper's shirt and plays with his nipples making him the human moan. Dipper covered his mouth and blushed in embarrassment. Bill grinned from ear to ear and pinned Dippers wrists with some magic bonds.

  Dipper pulls at them trying to get up. "Its no use Pine Tree you can't break them and now that I have you we are going to have some fun" Bill purrs. The teenager keeps pulling but the restrians hold him down and if he breaks one another comes and wraps around his wrists again. The tentacles around his wrists were a blueish black color they wiggled and stretched around him.

  Bill pulls off Dipper's shirt and hat. "B-Bill s-stop!!!" Dipper pleas. "Nope this is happening your going to be mine and I will be yours there is no stopping this" Bill chirps. He takes off his shoes, socks, and tugs Dipper's pants off until the only thing he is wearing are his boxers.

   Dipper's blush goes down to his chest and arms. "Aw your so cute Pine Tree I could eat you up!" Bill says as his tail swishes back and forth in excitement. Dipper was about to protest when Bill kissed his open mouth shoving his tongue into his mouth. The demon moans into his mouth fighting for domaninace. Dipper eyes widen he slowly slows down and hesitantly kisses back earning a hum from the neko demon.

   Bill starts to lightly kneed through Dipper's boxers. Dipper gasps and tries to pull his restraints again. "You know you love this Dipper" Bill says in a husky voice that sends a  chill down the humans spine. Dipper blushes lightly at his voice and nods slowly. Bill smirks and starts to kiss around Dipper's neck making him squeak.

   Bill slowly starts to pull down Dipper's boxers as he kisses his lips again. Dipper doesn't notice until he is completely naked and covers himself with his legs. Bill sighs and pulls his legs apart "Your beautiful Dipper that's one of the reasons I like you" Bill purrs. Dipper blushes until he can't get anymore red. Bill starts to kiss down Dipper's chest until he gets between his legs. "B-Bill w-what are you d-doing?" Dipper asks nervous.

  Bill ignores him and licks up his length making him gasp and blush. The demon licks the head and takes it all into his mouth bidding his head up and down. Dipper moans and gasps at the feeling he starts to feel a tightness in his lower stomach right before he could release Bill pulls up and smirks. "We can't have you done before we begin now can we?" Bill remarks. Dipper pants and gasps trying to catch his breath.

   Bill sticks two fingers in his mouth "Suck" he demands. Dipper licks Bill's fingers and coats them with his saliva. He pulls his fingers out and gently spreads the humans legs more then gently sticks one finger into Dipper's entrance making him gasp and moan at the feeling.

   Bill does this process until he feels that he is ready. He gently pulls his finger out making Dipper whines at the lost contact. "Don't worry the best parts coming" Bill purrs. Dipper nods in a daze his eyes slightly glazed over.

   Bill puts himself between Dipper's legs and gently slides into Dipper's body moaning at the feeling of his warm walls around him. Dipper hisses at the pain of having in his body. The demon neko gives him a few minutes to adjust to the feeling. Bill slowly starts to rock his hips in Dipper's tight hole.

  The pain slowly starts to fade away and pleasure starts to take over. Dipper starts to moan and tug at his restraints. Bill smirks and starts to pick up the pace slamming into Dipper harder and fast turning him into a moaning mess.

  Bills ears fold back and his tail wraps around Dippers waist he leans forward and kisses Dipper again. He then trails a few kisses down his collar bone he suddenly bites down on Dippers shoulder making him bleed slightly he sinks his fangs deeper into the humans flesh. Dipper gasps and moans slightly at the feeling. Bill hums at the taste of his humans blood. "You taste so sweet Dipper" Bill purrs.

  Dipper moans louder when Bill hits his prostate. Bill smirks and hits that spot with each thrust and grabs Dipper's member and starts to pump him in time with his thrusts. Dipper moans and gasps panting as he goes over the edge and cums on both their stomachs. Bill moans as he comes in side Dipper. He pulls out and strattles his waist then grows out his nails forming them into claws.

  Dipper sees his claws and tries to get out of his bonds again. Bill drags his claw down his waist making it bleed. Dipper was about to scream when one of the tentackles wraps around his mouth silencing his screams as Bill marks his skin.

  Bill admires his works his name is carved into his favorite human all he needs to do is kiss him and the contact with be complete. The tentackle removes itself from Dippers mouth. Bill quickly covers Dipper mouth with his own and makes him swallow his venom.

   The human swallows the venom with a groan and feels poison slowly feels his body changing. "W-what did you do?" gasps out at Bill. "Just making sure you never leave my side" Bill smirks.

   Dipper's line of vision starts to grow dark as his body slowly relaxes as his body's anatomy changes from human to demon. His head feels heavy as his body slowly falls victim to the venom. Bill smirks his tail swishes back and forth in delight as Dipper slowly changes.

  Dipper eyes feel heavy as he falls unconscious but before he foes he catches Bill's last sentace before fall asleep. "We can be together for ever and nobody can have have you back not even Shooting Star" Bill says in a possesive tone.