DeltaSlayer PLUS

Introduction

Welcome to the DeltaSlayer PLUS AU!! In this fanfiction, we explore the world of Deltarune x Demon Slayer! Owen is the co-author of this AU. He pitched the idea of the multiverse and I loved it. So let's start with the basics.

Here are the main six in this AU:

Kris Dreemurr

Crystal Dreemurr (OC)

Noelle Holiday

Susie

Berdly

Ralsei Rune

Information for each:

Kris: Leader of the team, has adhd and asd. They don't talk much in game, but in this AU, they talk more than you have ever seen them.

Crystal: An OC I made, adopted sister of Kris Dreemurr. Also has adhd and asd. She is an axolotl monster.

Noelle: A smart, kind, and gay deer monster.

Susie: A 7 foot tall Lizard monster with issues (jk jk I love Susie. I relate to her.) also gay. (Became a dragon at some point)

Berdly: Still the annoying bird monster he is in game.

Ralsei: The fluffiest Prince you've ever seen. He's very kind, and very innocent. His last name is Rune in this AU.

Here's what's happened so far: The story goes with the very choices I made in game. Pacifist routes. Only pacifist routes.

The light nerds trained and became Demon Slayers.

The light nerds went to the entertainment district.

An upper rank (6—Rukoriomo—more about him later) lost control due to the amount of muzan's blood in him, and tried to destroy the castle town, but was killed by Millie (more about Millie later).

Shinobu thought it'd be a good idea to have each hashira (excluding muichiro) watch over the light nerds and keep them out of trouble.

A demon attacked the school, which caused the Hashiras to work there as well.

The light nerds fought a couple twelve kizuki (Kotsuichi and Rosuna, more about them later)

The multiverse opened after a lot of weird stuff happening. A lot more things happened.

I also went a Little Crazy and started writing some lore, and added the bloodmoon because yes.

The demons

Sukirohime—the demon that the light nerds fought in the entertainment district. She disguised herself as an oiran and fought the light nerds (inspired by the entertainment district arc). Blood demon art—Stars that were razor sharp and could move quickly.

Korokoa—the demon that attacked the school. A lot like the hand demon from the anime's final selection, but kind of worse.

Rukoriomo—An upper ranked demon, killed by Millie. He was a cat demon, and was most definitely from the Taisho era, now in the modern era.

Kotsuichi and Rosuna—Basically the Jessie and James of the AU if you know what I mean. no, they don't have a meowth of the team. It's just the two of them. Both were lower three, and killed by the light nerds assisted by the kamaboko squad.

Ruko-Neo—Rukoriomo was brought back by the bloodmoon, and he fused himself with Spamton Neo. Full name—Rukoriomo-Spamton Neo. Killed by the light nerds.

Sukirohime-Korokoa—Sukirohime and Korokoa, both brought back by the bloodmoon, found each other and fused with each other.

Millie—A bird demon who works for the demon slayer corps. Mitsuri Kanroji's Tsuguko. Girlfriend of Jaiden.

Jaiden—A cat demon who also works for the demon slayer corps. Trained by Urokodaki. Former younger sister of Rukoriomo, and still the girlfriend of Millie.

Tamayo and Yushiro: You know them from the Anime/manga.

Kaveura—A gay demon who was in a relationship with a darkner. Harpy specifically.

Rudy and Dess—Noelle's family. Dess was turned into a demon to save her life. Same goes for Rudy.

Asriel—Yes, Asriel was turned into a demon. He was a marechi, and a demon got to him and got enough blood into his veins to turn him into a demon.

Characters I killed off so far

King Spade—Killed by Kris Dreemurr.
Benjamin the reaper leviathan—Killed by Overlord
Kaveura—Killed by a random demon slayer, that was then killed by a badly.

Extra characters that are worth mentioning

NA—a very tall little boy, found by Kris in the space in between dimensions, was in a coma and woke up.

Artemis—A toddler darkner Kris found and unintentionally adopted.

Susie's siblings—Samantha, Sadie, Scarlett, Scott, and Silas.

Raitoningu—THE THUNDER HASHIRA!! Created by Owen. Rai helped Kris on multiple occasions.

Himitsu—A Hashira i created, her breathing style is unknown.

Asher—A brother for Medic from tf2. Asher is a licensed doctor, and Kris sometimes goes to him for help if he's around.

Daniel—Asher's husband. Also a licensed doctor.

Heidi—an experiment creation, known as "the Demilord". Has three hearts, but not as big or as evil as an overlord.

Inspirations for things in the dark world

Dragons—The Legend Of Zelda (totk specifically)

Great fairy fountain—The Legend Of Zelda

The ocean—Subnautica

Some machines Veronica (a side character) builds—Subnautica

More elemental spells—Elements (obviously)

Ruins—The Legend Of Zelda

The multiverse—Gravity falls, Spiderverse.

Other things I believe I should mention

I added a lot of lore and many things to the dark world.

I believe I should mention the fact that I ship Kralsei and Suselle, as well as Obamitsu, ZenNezu, TanKana, InoAoi, as well as Tengen with his wives. Heavymedic is also shipped.

There are ships between OCs, like Jaidillie, Veronicrystal, Dansher.

Owen and I often voice act these characters when we call.

Owen and I decided that our recorded calls could be separated into different "episodes", like a podcast. We have started a new "season", as Owen says.

Different "Seasons"

First one--Done

Second one--Done

Third one—in progress!

Thank You for reading this!