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Blood... Blood everywhere... Blood and guts and distant crying...
Crying, huh...
It seemed like he had missed some of them in his rampage. Not like it really mattered. He could always hunt down the remaining survivors and finish them off one by one. It was not like any of them could leave this house on their own, himself included. No, they were all stuck in here, destined to die - either by his own hands or through eventual starvation.
No way out... And the only one who knew how to deactivate the blast shields around the house was-
"Why don't you do us both a favor and pull the trigger?"
A sudden wave of nausea. He closed his eyes in anguish, as his stomach violently emptied itself.
"Do it! Do it, motherfucker!"
He dry heaved for several more seconds, as his mind cruelly replayed that moment on a loop. The moment everything went to shit...
"Pull the fucking trigger!"
And pull he did. He remembered, with full agonizing clarity, his grandfather's face exploding, his brains splattering all over the floor and then... nothing.
No transformation of his grandpa's corpse back into an alien parasite. That was when Morty knew how much he had fucked up.
That was when his mind and his world all crumpled apart.
Brown, haunted eyes looked down at his own vomit, as the boy's stomach finally started to settle down again. Good. He needed his stomach, his body, to be calm and cooperate. He still had a job to do, after all. With grim determination, he wiped his own mouth, grabbed his laser gun and, like an executioner about to deliver his sentence, continued his gruesome walk down the halls.
He passed several corpses along the way, most of them looking all the same. There was the dead parasite formerly known as Tinkles. She had pleaded with the teenage boy for her life, with her big, watery eyes, before being revealed as yet another parasitic scum upon her death.
"But Morty, I'm your sister's friend. Which makes me your friend as well. Don't you trust your sister and me?"
There was the dead parasite formerly known as Baby Wizard. He had tried to take advantage of Rick's death and Morty's initial shock by immediately searching the scientist's pockets for something that could help them escape this house. Though he never got to finish his task, because, once Baby Wizard pulled Rick's portal gun out of his coat, Morty had immediately shot at him, accidentally destroying the portal gun in the process, and then hunted him and the muscled Duck down, angry for revenge.
"Morty, we didn't know! We really didn't! We thought Rick was a parasite, just like you had thought! Just stop shooting and listen to us, Morty! Morty, please!!"
There was the dead parasite formerly known as Reverse Giraffe. He had tried to wrestle Morty down, just after the boy had executed Mrs. Refrigerator in the kitchen. His opponent had put up a good fight, giving Morty three broken fingers and a bloody nose, but the boy's rage and his expertise in fighting, all thanks to Rick's training, had ultimately won out and he had successfully blown the other's head off.
"You are insane, Morty! You are just blindly shooting at everyone at this point! Stop fighting and think for a second, before you kill someone real!"
Of course, Reverse Giraffe, as well as the next three targets that Morty had shot at, had all turned out to be parasites themselves.
Parasites, all parasites... So many parasites... So many liars... So many murderers... So many dangerous pests that need to be exterminated, for the good of everyone...
There was Summer. She had also tried to stop her brother's mindless rampage and had been even more effective at it than Reverse Giraffe, by actually managing to take Morty's weapon off him. But what she hadn't accounted for was him having a second gun on his body. A gun which he had immediately pulled out and trained on her face.
"Morty, don't-"
She never got to finish her sentence.
The teenage boy sucked in a sharp breath and pointedly looked away from his sister's corpse. It didn't matter anymore. None of it did. They were all as good as dead anyway. Might as well make everyone's death a quick one. Just like his mother's death had been.
His mother, who now lay face down on the living room carpet, with a big hole in her torso. His mother, who, right up until her last breath, had accused Morty of being a crazed parasite himself, planning to kill her and her real family members, just so him and his fellow parasite friends could escape.
And who knew, maybe he was a parasite? He couldn't tell anymore. He couldn't tell reality from illusion anymore.
He only knew one thing. And that was that if he didn't exterminate every living being in this house and then himself, humanity wasn't safe. And Rick's, Summer's and Mom's death would've all been for nothing. And so he kept going.
More parasites... And Mr. Poopybutthole... Morty ignored them all, as he stepped over their bodies.
The distant crying kept getting louder and louder, the closer the boy got to the source of it. He finally rounded the last corner and was greeted by the grim face of his father - and Jerry hiding right behind him.
"Morty... You really... killed them all...", whispered Sleepy Gary in shocked disbelief. Jerry meanwhile kept sitting and blubbering on the ground, clearly overwhelmed with this whole situation.
"Yeah. I did."
There was nothing else to add and nothing else to do, so the boy just took aim at his clearly defenseless father (Was Sleepy Gary even his real dad? Guess he was about to find out.) and shot. What greeted him was yet another false loved one turning into a dead parasite right in front of him. Of course.
"G-Gary! No!! No..."
Jerry was hyperventilating now, panicked eyes going back and forth between Gary's corpse and Morty's cold face. Once again the boy took aim.
"No... h-help... someone... p-p-please..."
Morty pulled the trigger.