Two Separate Lives (Demon Slayer x The Promised Neverland)

♢Prologue♢

A/N

Video not mine, send love to this wonderful creator! This may be cringe, really didn't know how to start this off... Also this fanfic based off of the anime for The Promised Neverland, not to get it confused with the manga.

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3rd Person POV

Emma, Ray and Norman had finally escaped the demon world and made it to the human one. There, they were greeted by all the kids they saved; from the Grace Field house and others not. They were all so happy! Emma, Ray and Norman were happy to have made it out alive. 

Isabella, took the three to her house. She still lived with some of the younger kids from the Grace Field house. They washed up, ate dinner, and slept. Only to wake up to Ray not being there...

Both Norman and Emma rushed downstairs, where Isabella was cooking breakfast.

Emma: Mom, have you seen Ray?

Mom: No, isn't he upstairs?

Norman: He's not! We don't know where he is.

They tried searching for Ray everywhere. But Japan is so big, and there's a bunch of villages surrounded by forests. Even though it's safer, it's still unsafe. They just had to accept where ever Ray went and hope he was safe...

Ray's POV

We were finally safe... Or so we thought...

I woke up to the sound of heavy footsteps I groggily sat up and opened my eyes. I looked in front of me and saw a figure standing over Emma sleeping. I looked over to my left and Norman was still asleep. 

???: A child asleep. Perfect!

A demon!?!

I quickly reacted grabbing a piece of splintered wood, throwing it at the demon.

Me: Over here!

The wood landed in the demon's back. They pulled it out and turned around to look at me. It looked different from the ones in the other world. It had human facial features except not really human like. The pupils were like snake eyes, it had a really long tongue, sharp teeth, and a horn on the left side of its head. 

Demon: Oh, you're awake. And here I thought I could have eaten three sleeping children.

Me: Leave my family alone!

Demon: Family? But you look nothing alike. Perhaps you were adopted, if so then nobody will ever miss you all.

I stood up from my futon, remembering that mom told us to keep our bows and arrows with us in our rooms. Maybe this is why. I grabbed my bow and an arrow from and aimed at the demon.

Demon: How cute. You think a little bow and arrow will do damage? I'm a demon, I'm invincible!

I scoffed and shot at it, but it caught the arrow right before it hit it's eye. I was shocked.

Demon: Feisty aren't you?

It stepped closer to me, and closer. 

Demon: I bet you're gonna taste delicious.

I'm sorry, Norman, Emma, mom, everybody...

I grabbed the arrows and jumped out the window. Luckily the demon followed me and didn't try to go for Norman or Emma. I hope I can outrun this demon. I started running towards the forest. This forest, all the trees were normal, but I don't know what lurks here, so I have to be careful because there can be more demons out here too.

Demon: You can try run, but I'll find you!

Ray, it's fine. This is just a game of tag! I had my bow ready to shoot just incase. The demon wasn't behind me anymore, but it was still following me. I could tell...

Then a different demon appeared in front of me. It had diamond pupils, a stitched mouth, and stitches all over its body. I shot an arrow, it hit the demon's eye, but it didn't even flinch. It just pulled out the arrow along with its eye. Regenerating it soon after.

What is this? This isn't like the demons we've dealt with before.

Demon #2: You think shooting an arrow in my eye will work? Pathetic.

Demon #3: Another human in our forest?

Demon #1: Better yet, a child.

Three demons??? I'm so dead. I don't know how to kill these demons either. I'm sorry Emma, Norman, Mom, everybody. Please stay safe.

Just as the three demons started to surround me, I cowered covering my head like that would do me good. Then, there was a voice and rustling coming from another part of the forest.

??? Water Breathing: 9th form! Splashing Water Flow.

I heard slices, and someone land behind me. I looked up and saw the three demons were beheaded and slowly decaying. I look behind me and saw a man with a mask on sheathing a sword.

???: Are you safe?

Me: Yes, sir.

???: Good.

He was mysterious. Then another person came out of the forest. They had peach hair, and a scar across their face. I still didn't know the proper terms for clothing here, so I could tell what they were wearing. He looked over in my direction and flashed me a smile.

???: Hello! My name's Sabito! This old man here is Mr.Urokodaki, my master. What's your name?

Me: My name's Ray.

Sabito: Nice to meet you Ray!

Mr.Urokodaki: How many times have I told you to stop referring to me as an old man.

He then hit Sabito on the head. I had to stifle my laugh. This reminded me too much of when I had to knock some sense into Emma as a kid. Sabito rubbed his head.

Mr.Urokodaki: Kid, where'd you learn to shoot an arrow like that?

Me: I used to live in a forest filled with demons. Me and my family were taught by these demons who didn't require the need to eat humans, Sonju and Mujika. 

Sabito: You survived in a forest of demons! So cool!

Mr.Urokodaki: Demons taught you how to fight other demons?

Me: Yeah, it's hard to believe isn't it.

Sabito: Can Ray live with us?

Me: Wha-? I just met you!

Sabito: You seem like a cool guy, plus you know how to defend yourself! You'd be great in the demon slayer cor- OW!

Mr.Udorodaki: Quiet down! Do you want to attract more demons?

Me: Demon slayer?

Mr.Urokodaki: Yes, demon slayers kill the demons here in this world. I am a retired one teaching others how to become one.

Sabito: And I'm his current student!

Me: Cool! So the demon slayers like the protectors of this world?

Mr.Urokodaki: Yes, and you have the skills. Would you like to train to become a demon slayer?

Me: Yes!

Sabito: Yay!

I'm going to be gone for a while, sorry Norman, Emma, everybody. I'll be back one day. I promise.