"What?!"

That's the first thing Six thinks as she hears what Shichi has said. The boy's scar looks like a giant bite mark, reminding her of some uncomfortable memories.

Shichi then slowly wraps his scar back but doesn't wear the mask. A look of silent agony still remains on his calm face.

Six slowly gets back to a defensive state, preparing for another attack from Shichi as she thinks this is bait.

"You still act innocent? How ruthless you are, Sis."

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Six becomes more confused yet remains cautious. However, something starts to hurt inside. Something guilty.

What does he mean by 'sister'?

And why do I feel...irritated by it?

Even then, she tries her best to hold her boiling anger of being scolded for things she doesn't even know.

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Shichi then sighs with disappointment and then rushes to Six, to which she counters by dodging aside and intends to punch him.

*Thud*

"That won't work on me, sister." Shichi stares at Six with bullet crimson eyes as he catches Six's fist.

Six immediately backs off and immediately tries to knock him down spontaneously. Yet, he still dodges Six smoothly.

.

"You killed our..., my parents, the ones who took care of us," Shichi says silently but loud enough for Six to hear.

More questions fill Six's head.

"Our parents?"

Six doesn't remember much about her past before noticing herself at the Nest. At the time, she only knows about surviving the dread of the monsters in the place.

Still thinking that Shichi just makes things up, Six then feels more uncomfortable by his aggressive manner.

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"And THE MOMENT I MET YOU AGAIN, YOU ALSO TOOK MINE." Shichi yells rudely at Six -"YOU TOOK EVERYTHING AWAY FROM ME!"

"I DON'T EVEN KNOW WHO YOU ARE!" Being so triggered, she can't hold back her anger, rushing to hit Shichi by his arm at such speed that he can't react -"SO STOP ACCUSING ME of WHATEVER YOU'RE BLAMING ME FOR."

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However, though the punch is quite a hit for Shichi, he can still stand after it.

"QUIT PRETENDING!" Shichi continues, to which Six yells back -"I DIDN'T KILL ANYONE LIKE YOU!"

"I WAS THE NOME YOU ATE!" Shichi yells.

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Six's mind slowly loads the statement.

What?!

Six can't stop showing a shocked face.

The Nome?!

That reminds her of forgettable memories.

The ones still lingering in her mind.

The ones that show her being no human.

The ones that...

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He has gone so far.

"How could you be the Nome?" Six says with a fit of silent anger as she stops attacking Shichi -"Even if you're from the Maw."

"Heh! Now, you show your reaction." Shichi stops to say -"I was turned into the Nome by THE LADY."

Six becomes more shocked.

"He's that Nome?"

"Being a Nome, I wandered around until I arrived the room with a sausage in the center."

"He's that Nome?!" The more Shichi says, the more Six believes in his words -"But..."

"Six, I have seen you going to the room starving, so I offered you the sausage."

Memories flash through her head.

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A boy smiles happily at her.

"What's this?!"

Happiness. Dread. Family. Hungry.

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Six starts to lose her balance, kneeling on the ground.

Then, she sees two adults. One man with casual clothes and black hair lifting her up as a woman with black, wavy hair from afar smiles and holds hands with a little boy. However, their faces are 'hidden' even from the man.

"Who are these?" Six thinks as she holds her face and feels something regretful inside, unlike the one from dropping Mono.

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This time feels more painful.

It makes her grieved. Makes her sorrowful.

Tears start to drop down her cheeks.

"But what happened?"

"I've told you..." A chilling voice appears next to Six, making her frightened -"You killed your own family."

Six turns just to the darkened face of herself, smiling creepily at her.

Then, the previous adults' faces become more visible.

The man shows a grateful face with bright red eyes, while the woman has beautiful pure ruby eyes. And the boy...

"It's Shichi?"

The boy has the same eye and hair color as the man.

"They're..." Six's breath starts quickening as she feels the guilt inside her growing more -"...my family?"

"BUT...YOU...KILLED...THEM..." Her dark self stares at her with disgust -"YOU...MONSTER..."

"I...kill them?" Six realizes the sins she's done.

"No, no, no, no."

"BUT...YOU...DID..."

Then, blood fills her vision as she sees two corpses lying before her, being mangled and shredded.

"WHY?!" A yelling attracts her attention. Six turns to see the previous little boy looking terrified, yet yells angrily at her -"WHY DO YOU DO THIS?!"

Then, the boy is slowly overlapped by Shichi.

"I...I..." Six can't clearly think as she's filled with guilt and regret.

"YOU..." Her dark self whispers again -"MONSTER!"

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(3rd POV)

Shichi is very confused by the sudden collapse of Six. He wonders what would make her fall.

Then, Six's presence suddenly turns murderous and intense, making him and all the Nomes fall back.

"What was that?!" His question is immediately answered as he looks at Six's face.

A sinister smile glows on her face as she slowly gets up.

"What is this feeling?" For a long time, Shichi feels the urge to evade.

Shichi defensively stands as he waits for any movement and...

*THUD!*

Shichi suddenly feels a painful heart stroke.

"What?!"

And as he looks at the Nomes observing by Six's side, several Nomes have disappeared.

"They're your soul, right?"Six gets Shichi's attention, and also makes him frightened by what she's done.

Nomes stick inside the sudden appearing black mist around Six and slowly be consumed.

And Six's face turns darkened as several misted tentacles appear behind her.

"Feast time!"

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Oh, no! Shichi will have a BIG problem with his sister now. :)

And for those who wonder why Aizawa hasn't come stopping Six and Shichi, I can say one thing: It's because of the Nomes.

But how? Follow my Crossover for more. :)

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Now, Let's move on to:

I.W.T.L.K

Ham (Chapter XXVI): This is a nice way of revealing that shichi is six's brother.

Love your crossover.

I would like you to wait to make demon slayer x little nightmares until this one is done, but you do whatever you think is best.

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TLK9999: Thanks for your review, as usual, Ham. :33

And yes, I'm going to speed up the writing.

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And for anyone new, please Follow and Favourite since that will make my Crossover come to more people.

And don't forget to Review if you have any questions or requests.

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Thanks for reading.

TLK9999.