My own Gravity Falls like thing?

The Deal

The gang was left outside to think about the fun yet dramatic day they had then they split up to go to their own houses not only a minute after everyone had left Kat had looked out of her window to be met with erie darkness and a slight annoying horrid tapping on her window, she,instead of opening the window she walked to her front door (because she is a scaredy- Kat bu dum tiss) and opend it while seeing two people on her lawn they looked slightly familier and then it clicked its the brothers one of which is her partner Bill and Dustin.Bill was throwing pebbles at her window while Dustin was sitting on the sidewalk looking slightly aggrivated by his brothers actions but Kat paid no mind to it as she walked up to Bill and Dustin scaring the crap out of them both. "O-Oh heyyy Kat" Bill said awkwardly as Kat was not only giving him a death glare but also a WTF look while saying " WTF DUDE WHY ARE YOU THROWING ROCKS AT MY WINDOW!" "There pebbles not rocks" he said with a smart alak look on his face "OH SHUT UP SHERLOCK !" Suddenly Kat abruptly turns around looking at Dustin while he was snickering abou who knows what then he randomly yells " I SHIP IT LIKE FEDEX!" Making Kat and Bill simontainiously blush " SHUT UP " they both yell at the same time then Bill puts on a serious face while asking something that seemed important to him "Kat lets make a DEAL (and the plot thickens) "What kind of deal" "don't trust him Kat" Dustin said " Let me decide for myself Dustin" Kat said angeraly "Know what kind of deal" Kat said again " well I'll stop Thorn from bullying you " " what do you want in return" Kat said questioningly " well lets just say I'll think of that later " Bill replied with a devolish grin on his face " well then its a deal" Bill's hand lit up in blue flames as he reached out for a handshake with Kat but she was afraid to grab his hand because of the flames she feared that her hand would be engulfed in flames but he reasured her that it was okay and she grabbed his hand shaking it and that was the beggining of their longterm deal that will last a loooooong time
A/N heeey hoped you enjoyed it longest story so far and it was deleted so I had to write it all over again.