Chapter 1: Happiness for a while
Finn woke up on his bed like always, except that today he woke up next to a nude Marceline and he was also naked. He saw Marceline's beauty while she was asleep. "Such beauty. I wonder how we even got like this...", he said before he suddenly realized something.
He woke Marcy up quickly. She groaned and asked, "Why so early? What's going on?"." You need to leave Marcy. I don't want Jake to see us like...", before he could finish he heard Jake calling from downstairs. They quickly got dressed. Finn wore his normal baby-blue shirt and shorts while Marcy wore a checkered black-red, long sleeved T-shirt with a pair of jeans. They quickly got downstairs and saw Jake, Lady Rainicorn and their rainicorn pups raising their eyebrows. "Jake, I can explain..." Finn started before Jake cut in, "No need, bro. We knew it all".
After 15 minutes of bizarre explanation, Finn sat with his jaw wide open. He asked, "So you all got me to party and then got me drunk? Is that how we got into... that, Marceline?". Marceline just nodded."I know I'm now 18 and all, but last night could be most extreme!", Finn said after a chuckle. Then the whole room broke into laughter. After breakfast, Jake suggested for them all to go on an adventure. So they hopped onto Jake's back and began their adventure. They did many great things that day. They caused a flood to happen in the Fire Kingdom, pranked someone in front of a sad ogre and blew up a whole dungeon. Hell, Finn and Marceline both made a playful marriage oath and Jake recorded it all before throwing the tape down a cliff.
Finn felt happy at the end of the day. Although he lost Flame Princess a few months ago, he found a new and permanent love interest. Although his dad ripped off his arm, he recently met a wizard that fixed his arm perfectly. He enjoyed this moment and he really hoped this moment shall last...