Adventure Time! {Pen x Reader}

This story is based off of a deviantart account's art. I do not own any characters, some characters are owned by karkat from deviantart.

Finn and young Marshall Leroy become friends with a pretty young lady. They decide to bring her to Finn's home since Marshall Leroy's siblings are meeting up there. But this young lady catches someones eye. She is introduced to Finn's siblings and Marshall Leroy's siblings and a few other friends. All of them grow closer together and eventually (y/n) becomes part of their adventures.