Fionna awoke in a a dark place. Marshall Lee lied strewn across her lap, still bleeding. She didn't know where she was or how she got there. A light appeared from the corner of her eye and it flashed. In it's place was a ghost with long flowing hair and simple features.

"Young human, when you fell into the abyss, you actually fell into my cell where I caught you and gently placed you here. I am the Ghost of Light and I was trapped here by the wicked ruler of the Nighto'sphere. I thank you for freeing me. For this, I shall grant you one request." Fionna didn't think twice.

"I want to save my dying friend!" The ghost looked at Marshall Lee who breathed shallow breaths now.

"Human girl, I'm afraid the only way to save your friend is to offer him the life of another." Fionna looked at Marshall in desperation.

"What...what about my life?"

"You are a mortal and thus, the vampire boy you wish to save shall become mortal much like you." Fionna looked at Marshall a final time before deciding. She looked at the ghost with determination and closed her eyes as she spoke.

"Then I choose to give my mortal life to Marshall Lee." Marshall opened his eyes now, looking up at Fionna as she said the words that would let him live.

"No!" he whispered, barely able to speak. But it was too late. Fionna began to glow and Marshall felt a fuzzy warmth begin to grow within him. There was a flash and everything went dark. Marshall opened his eyes, blinking a few times. He was laying on his side and the only light came from a hole far up in the ceiling. Suddenly, he remembered what had just happened.

"Fionna!" He yelled. He sat up and looked over his shoulder. Lying on the ground, just a silouette in the dark cell, lied the girl he loved. He ran to her, bending over her lifeless body. He rolled her over and looked into her peaceful face. Tears streamed down his cheeks and he couldn't see anything.

"NOOOOOOOOOOOO!" He screamed out before collapsing over her, his whole body shaking with sobs.

Marshall walked to the funeral, umbrella in hand. He had to dig pretty far into his closet to find this over-sized suit. He thought back to when he had taken Fionna back home to Cake. She had collapsed to her knees without a word. They both sat there and cried, even though Cake was still scared of him. You just didn't take that kind of stuff into consideration when you're that filled with grief. He had called Bubba too. Bubba acted very formal but solemn over the phone, saying he'd arrange a small funeral for her. But Marshall had been right outside his window and when the oh-so proper prince had hung up, he had sat on his bed, head in his hands, and cried softly. Marshall was at the top of the hill now and could see the small gathering of Fionna's closest friends at the bottom, surrounding her gravestone. He joined them now as Bubba said a few words. Amoung them were Cake, of course, and Lord Monochromicorn. B-MO stood there too and Lumpy Space Prince floated next to Prince Gumball. When Bubba went silent, they all just sat there and stared at her grave.

Cake sobbed and Gumball sniffled here and there. The first one to leave was LSP. Lord M followed shortly, inviting Cake over later if she wanted some comforting. Soon, Prince Gumball picked up B-MO and he slowly walked away. The sun was setting behind them when Cake finally turned away and walked home. Marshall still stood there staring at her tombstone. He took his umbrella and folded it up, not needing it anymore.

"When my heart starting beating for you, I almost died. And when all seemed lost, you didn't give up. You gave your own life so that I could live mine." Marshall placed his hand over the scar on his neck, oppisite his bite marks, that marked the place he had been shot.

"And now, my heart beats because of you. I will live this new, mortal life of mine to it's fullest. I will do good and protect Aaa much like you did. For you. Because of you." Marshall now placed his hand on his chest where his new, mortal heart beat.

"I love you, Fi, and I always will." He took something from his back pocket and set it in front of her gave before opening back up his umbrella and walking away into the sunset. The colors in the clouds made the white bunny hat now sitting on her grave, glow ever so slightly. On her tombstone it said,

"RIP Adventurer and Heroine Fionna 'Fi' the Human."

THE (Sad) END