Emily finally manage to get confirmation that she had won the lottery to the next monster mash. Her boyfriends and her friends all manage to get in and she was worried she would lose out this year. Emily texted her friends that she got in. The next few days after was a bit of a rush to buy tickets to Lawrence, Kansas and book hotel rooms. They landed in Kansas with two weeks to spare, they six of them double checked their costume and confirmed what they wanted.
Emily reminded her boyfriend Kyle that he and their mutual friend Jenny would be merging, so there better not be any secrets being withheld now. Kyle and Jenny made it clear they have told Emily everything which is why they are also more excited to become one. Their costume was similar to a stereotypical centaur, the main difference was the room in the front for two torsos, one in front of the other and the extremely large cock and balls. Emily would be the forward most torso with her boyfriend Kyle being right behind her, Jenny would be the horse lower half.
Their 3 other friends were also discussing their future together. Emily and Kyle looked at their soon to be wife/wives. Emily's only male friend Gabriel would merge with her two best friends Claire and Britney. Gabriel would wear a sexy female demon lord costume, being equal parts curvy and muscular. Clair and Britney would wear a two headed dragoness centaur costume with the opening in-between the two heads. The dragon centaur torso had 6 large tits and 4 large crotch-boobs as well as a pussy designed to take their monstrous centaur cock.
The six of them had talked for a few years ever since the incident and the six of them realized their true desires after going together to see a mage psychiatrist. Now after a few years of trying to get in they succeeded, now they can achieve their desires and marry their true selves. Before they left for Kansas they already began filling the marriage documents.
They were fully aware that getting pregnant will cause the changes to be permanent, so while it would be easy for Gabriel, Clair and Britney, it would be difficult for Emily, Kyle and Jenny since they were going to be male. To circumvent this Gabriel, Clair and Jenny's tail will also act as an ovipositor and lay in them one of the eggs Emily, Kyle and Jenny will fertilize.
They waited for Halloween to come around, making sure their costumes were in perfect shape. Now was the day, they made their way to the university and went into one of the washrooms to get into their costumes.
Emily felt Kyles cock enter her ass as he settled behind her, she then felt him thrust in a bit more as Jenny got into the costume. Emily knew now that the hardest part was getting into the center of the stadium without moaning or cumming, she knew Kyle will help to keep her up should she feel weak in the knees, but she also knew he would have to fight the urge to cum himself.
They manage to meet up with Gabriel, Clair and Jenny. Emily knew they would have an easier time moving around compared to themselves but, it was clearly awkward for Clair and Jenny to move the rear end since their legs were sharing the same rear leg space in the costume.
The "Two" of them made it to the center of the stadium, Emily and Kyle essentially having sex as they walked in and nearly collapsing a few times on the way in. But now that they were there all they had to do was wait for the spell to change them into their costumes.