Lol. There are nineteen crossovers for Twilight/Fullmetal Alchemist.
Some things just don't deserve to be crossed.
And imo, this is one of them.
If Bella was Edward's Sister
"EDWARD," a girl with long blond hair shrieked, "ALL!!"
"CUT!" Anny stormed out from the toilet she sat in with Luffy. "FOR THE LAST TIME YOU MARY-SOO, HIS NAME IS AL. GET IT RIGHT."
"...Sorry," she said modestly, but rolled her eyes, because she is a mary-soo and can do no wrong!
"Okay." Anny growled, walking back to the toilet and picking up a camera. "Take number 6987."
"EDWARD," mary-soo Jannette Elizabeth Shlickadoodle the Eightieth "Bella" shrieked, her long blond nose hair swaying epically in the wind (They were in a room, but somehow there was wind, because long flowing hair makes everything cooler!!1), "AL!"
Fakely fake tears ran down Bella's face, dribbling off of her double-chin like drool. Her bedazzling sapphire/emerald/topaz/ruby/onyx/crystal/clear/rainbow-flashing orbs shone in sadness, cutting holes through the smoke in the room magically.
The mist (SMOKE DAMMIT) drifted away, revealing a golden-haired boy with sexy abs and no right leg. In fact, he was bleeding from the stub of a leg he had left.
"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" Bella gasped, dragging herself toward the random punk.
"ARE YOU OKAY?" She asked because she was stupid.
"FUCKITY FUCK NO," the boy screamed, " FUCKITY FUCK INA FUCKING ********* AND I ***** IT'S SO **** ****** HURTS AND ************************************************************************************* OH MY FUCKING GOD WHAT THE *********** FUCKING ************ IN A CAN ************* IT'S SO DAMN *************** **************** NOW ************** YOU BITCH GOD DAMMIT OUR MOTHER IS A FUCKING ********************** ********** I MEAN DID YOU FUCKING SEE HER ***************************************************************************************** ****** DAMN!"
"..." Bella said nothing. "Bye." She stood up, ready to leave, when she was their mother.
She was on the ground...
a monster.
Bella fell back, screaming, toppling Ed over and bashing his head against the wall.
(insert plotholes here)
(more)
(plotholes)
And in the accident, Bella had lost both her arms and legs. Edward had lost his left arm. Alphonse, however, was luckily, and safely, transmuted into a jack-n-the-box.
(years pass)
(they get metal limbs)
(more years)
(angsty angsty)
(cliches)
(years)
(Bella does something retarded and fuckity fuck)
"OH, EDWARD," Bella screamed, as Edward stripped her, "I (insert lame romance dialogue here)."
Edward stopped doing everything. He was quiet for a long time.
He jumped up.
"THAT'S FUCKING IT I CAN'T DO THIS ANYMORE!" He shouted, storming over to Anny.
"THIS IS THE FUCKING LAMEST MOVIE I'VE EVER FUCKING DONE I FUCKING QUIT!"
"YAY!" Anny rejoiced. She had hot secks with Edward.
Bella cried, and slit her wrists.