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Language:
English
Series:
Part 1 of Oreo’s haikyuu rarepair soulmate au!!, Part 1 of Oreo’s haikyuu rarepairs!!
Stats:
Published:
2026-03-20
Updated:
2026-04-05
Words:
32,011
Chapters:
4/?
Comments:
8
Kudos:
23
Bookmarks:
4
Hits:
306

The Cult of Dionysis

Summary:

Daichi didn’t know what he was expecting his soulmate’s animal mark to be, but he certainly wasn’t expecting there to be two, and he certainly wasn’t expecting them to hate each other.

In which, on their 17th birthday, everyone gets their soulmate mark; the animal embodiment of your soulmate that can move tattooed on your body

Chapter 1: Introduction

Notes:

(See the end of the chapter for notes.)

Chapter Text

Hello! Welcome to my soulmate AU. I want to write about rarepairs, and explore their dynamics as soulmates. This fic (if you hadn’t already guessed) is Kuroo x Daishou x Daichi. I’m aware that Daishou and Daichi have hardly interacted in the series, but I know Kuroo x Daishou and Kuroo x Daichi are on the ‘popular’ side of rarepairs in Haikyuu, so I wanted to see what all three of them together would be like as a three.

This introduction is just to provide a rough guide as to where this fic is going, and also to provide some background information about each character and for the AU I’m writing this fic in. I also apologise if any of them are a bit OOC, I’ve only just started re-watching Haikyuu and haven’t properly been in the fandom for a few years. This is the first fic that I’m committing myself to for a while, so please excuse any mistakes. This is also the longest fic I’ve ever written so far (I think), and I haven’t completed half of the ones I have started, so me managing to stay focused is going to be difficult.

As of writing this introduction, I’m almost finished with Daishou’s first chapter, and I’ve started Kuroo’s and Daichi’s first chapters. The POV will change quite a bit in this fic, I’m planning on each chapter to focus on a different person’s POV, however, I’m planning on sticking to Daichi’s POV after I’ve finished his chapter.

I don’t really have an ending for this fic yet either, so it might when each of them only have one chapter, it might go on for longer than that. I can’t make any promises, though, sorry! The chapters are also going to come out at weird times. I’m a uni student and I have a part-time job at home, so I don’t always have time or energy to focus on writing the fic. I also don’t have a set publishing schedule, but I will try and update consistently when I can.

If this fic does well, I might also write about the background pairings that appear in this fic. But enough of me waffling, here is the information that you all want:

Pairings:
* Kuroo x Daichi x Daishou (main pairing)
* Daishou x Mika (at start of story)
* Sakishima x Kazuma x Hiroo (Daishou’s teammates in his year)
* Yaku x Suga (introduced in Kuroo’s first chapter)
* Kai x Reon (introduced in Kuroo’s first chapter
* Asahi x Aone (introduced in Daichi’s first chapter
* Kiyoko x Yachi (introduced in Daichi’s first chapter)

Animals:
Main Ship:
* Bombay Black Cat (representing Kuroo)
* German Shepherd (representing Daichi)
* Japanese Rat Snake (representing Daishou)
Others:
* Elegant Tree Viper (representing Sakishima)
* Golden Retriever (representing Kazuma)
* Hokkaido Wolf (representing Hiroo)
* Madagascar Serpent Eagle (representing Reon)
* Whistling Swan (representing Suga)
* Shiba Inu (representing Yaku)
* Kuvasz (representing Aone) * Asian Golden Weaver (representing Yahci)

Birthdays:
Main Ship:
* Daishou - 1st July
* Kuroo - 17th November
* Daichi - 31st December
Other:
* Kai - 8th April
* Suga - 13th June
* Kazuma - 4th August
* Yaku - 8th August
* Sakishima - 14th November
* Mika - 19th December
* Asahi - 1st January
* Kiyoko - 6th January
* Hiroo - 16th January

Lists will be updated as the story progresses

Chapter order:
* Introduction (updates as fic progresses)
* Chapter 1: Daishou Suguru is not ok (Daishou’s POV)
* Chapter 2: Kuroo Tetsurou is a simp (Kuroo’s POV)
* Chapter 3: Sawamura Daichi’s adventures in soulmate-land (Daichi’s POV)
These are the chapters that I have ‘planned’ and started so far. Any new chapters that get added will be added to this list

AU overview:
Everyone gets a soulmate tattoo on their 17th birthday. No one knows how this happens or when this phenomenon started, but enough research has been put into soulmarks to understand their base significance. Your ‘soulmate’ appears as a moving animal on your forearm that gives each individual an insight on who their soulmate is, mainly what they look like and how they behave.

Anyway, that’s enough from me, time to get to the fic.

Notes:

Updated 5th April 2026