Demon Slayer: Equilibrium (An OC Story)

Character Intro: Quartet of Chaos (Main Slayers)

First Name: Yuraki

Last Name: Tomioka

Pronouns: He/They

Age: 16 (Tsuzumi Mansion), 17 (Post-Mugen Train, Pre-Entertainment District), 18 (Post Story)

Height: 5'8" (Final Selection), 5'11" (Post Story)

Eye Color: A gradient of mostly blues and purple

Hair Color: Black but he dyed the ends blue like Giyu after final selection

Love Interest: Genya Shinazugawa

Breathing Style(s): Balance and Water

Slayer Rank: Mizunoto (Tsuzumi Mansion), Kinoe (After Entertainment District Arc (Eligible for Hashira a little before Swordsmith but didn't become one due to the incompleteness of Balance Breathing, he has killed over 60 demons by this point.))

Haori Color: Gray with a black wave on one sleeve and a white wave on the other. The bottom of it looks similar. It was a gift from Rengoku when he joined the corps.

Blade Color: Dark Violet to represent Balance breathing

Japanese Voice Claim: Kōki Uchiyama–Izumi Miyamura (Horimiya)

Info: Giyu's tsuguko (student) They perfected three forms of balance breathing during Final Selection. He can use a few Water Breathing forms but he isn't proficient at it. Giyu's a bit bitter that they may not decide the next water hashira and that's why he bet so much on Tanjiro using it. Balance breathing has six forms. He met Genya through Gyomei, the Stone Hashira, a month after the events of Mugen Train. He gets along with most of the Hashira, though he has friction with Shinobu and Tengen. They frustrate him. He doesn't get along with Sanemi at all. He takes care of the Kamaboko trio, having close bonds with all of them, the four of them being like brothers. He has met Kage briefly before but they've never spoken more than a "hello"

First Name: Kage

Last Name: Hoshitoru

Pronouns: He/Him

Age: 16 (Final Selection), 17 (Mount Natagumo), 18 (Post-Story)

Height: 6'2 (Final Selection), 6'7 (Post-Story)

Eye Color: Black

Hair Color: Black to white fade

Love Interest: Muichiro Tokito

Breathing Style(s): Shadow Breathing & Mist Breathing

Slayer Rank: Kinoe (eligible to become a hashira but refuses to), Shadow Hashira (After swordsmith village arc)

Haori Color: Dark gray with dark teal waves across the bottom (he uses his haori to blend into the shadows. The waves at the bottom was Muchiro's idea, though Muichiro doesn't remember ever suggesting it)

Blade Color: A very dark teal, used to represent shadow breathing, along with Kage's calm yet dark personality.

Japanese Voice Claim:

Info: Muichiros caretaker, watches and trains with Muichiro to make sure neither overwork themselves. Kage cooks for Muichiro and makes sure he sleeps. Though Kage cares for Muichiro, he does not care for himself the same. Kage does not eat the food he cooks nor does he sleep, Muichiro doesn't remember enough to know this.

Muichiro remembers who Kage is to him and remembers that Kage has protected him and taken care of him for many years, but he doesn't remember how they met.

Much like Muichiro, Kage often forgets people and their names. If they aren't of any significance when he learns their name he will probably forget it. He often asks people their name a few times before he will remember it.

Kage gets along with some of the hashira, but he and Shinobu don't like each other.

Known as the strongest Kinoe, and one of the strongest demon slayers.

Kage's grandfather started creating Shadow breathing before he lost one of his arms and was forced to retire. Kage's grandfather taught Kage what he could about it and after he died Kage finished creating Shadow breathing in his honor. Muichiro learned 2 shadow breathing forms and has used them a few times.

First Name: Hiromi

Last Name: Masuda

Pronouns: She/Her

Age: 19 (Hashira Training)

Height: 5'2 (Hashira Training), 5'3 (Post-Story)

Eye Color: Sky blue

Hair Color: Light pink (dyed)

Breathing Style(s): Vine Breathing

Slayer Rank: Hinoto

Haori Color: A light green fading into a deeper green, with vines all around it along with small mushrooms

Blade Color: Magenta, used to represent her sweet, loving, as well as harsh personality

Love Interest: Taro Shibana

Japanese Voice Claim:

Info: Hiromi is very kind and sweet, she doesn't like to see other humans hurt. Though when it comes to demons, she's heartless towards them. She idolizes Mitsuri and strives to be just as strong as her one day. 

First Name: Haruka

Last Name: Kusaka, Iguro (After getting adopted by Obanai and Mitsuri)

Pronouns: He/Him

Age: 16 (Hashira Training), 17 (Post-Story)

Height: 5'7 (Hashira Training), 5'10 (Healing part of Post-Story)

Eye Color: Left dark blue, right amber

Hair Color: White

Breathing Style(s): Serpent Breathing

Slayer Rank: Tsuchinoe (Hashira Training)

Haori Color: Black with lavender waved strips

Blade Color: Lavender

Japanese Voice Claim:

Info: Obanai Iguro's tsuguko. He's very blunt and he doesn't care if he hurts anyone's feelings. He respects all the hashira and Kagaya Ubuyashiki. He treats Kage like he's a hashira. Haruka hasn't got along with any of the Hashira's tsuguko (Other than Yuraki and Kanao), he treats them as he would any other slayer. Haruka smells, sounds, and has a presence of a very weak demon, so any slayer that doesn't know who he is thinks he's a demon, especially when he's not wearing his uniform. Haruka's eyesight and hearing are very bad, but his sense of smell is very good, like Tanjiro's. Haruka also has the ability to see heat signatures, slightly making up for his bad eyesight. Only the hashira and Yuraki know about his differing senses and compensate to them when he's around. Haruka has a seven digit number tattooed on his back, it was the number that the scientists used to Identify him. His number is '4072315'.