Kaguya Yamabiko

Kaguya Yamabiko is a supporting character in Demon Slayer: Blade of the Night. She is a Demon Slayer, and is currently in a coma, originally maintaining the goal of revitalizing the Sound Sect in honor of Tengen Uzui.

## **Appearance:**

Kaguya is a young, tall girl with a muscular build, and while her natural hair color is black, as shown by the roots of her hair, she bleached most of it to be white, much like her idol. Kaguya has been noted to use flashy makeup, most notably bright red lipstick.

Kaguya did not have the opportunity to wear a Demon Slayer Uniform as of present, and in her first introduction, she wore white hakama pants and a sleeveless black kimono top. All the while, she adorned herself with countless necklaces and bracelets, however her most notable choice of fashion are her hoop earrings, one of which was taken by Ryo to keep as a memento of her until she awoke. The other earring remains with her other belongings at the Core Hospital.

Kaguya, due to her comatose state, has considerably frailed from her original muscular build, becoming pale, and her hair has outgrown its bleached strands, meaning that now she lost all her distinctive outfit choices.

## **Personality:**

Kaguya has been shown to be a fun-loving and trusting person, even if she lacks qualms about threatening others for her own goals. Her first introduction was that of putting a cleaver to Ryo's neck merely for talking to Taro somewhere supposedly secretive. This is however, shown to be a front, as she was willing to believe Ryo's story while not having any proof that he wasn't lying, and then proceeded to warm up to him after he brought her to a safe spot upon her fainting. Additionally, the trust he gained was strengthened when she indeed confirm he hadn't done anything immoral to her while fainted.

Kaguya, upon fighting the Vest Demon alongside Ryo, truly befriended him, and later on Taro after she helped Ryo save him from Iwajima. This goes to show how easily Kaguya can make friends, even if only one of them is truly close to her.

Kaguya's main ideal is to be like Tengen Uzui, the man who originally saved her, despite him already being deep in retirement, he risked his life to save hers, and since then, she began to research him and learn as much as she could, now going as far as dressing and bleaching her hair in ways that would make her similar to Tengen. Kaguya tends to use words and mannerisms of Tengen himself, even using "flamboyant" as a compliment.

Kaguya, in Tengen's memory, wanted to revitalize the Sound Sect, which had been left neglected due to the three Uzui triplets failing to decide a Pillar on their own terms. She personally had no idea how she'd do it, rather choosing to think about it later. That said, she is shown to be immensely determined, using Tengen's techniques by osmosis, never truly learning them from the man himself, yet being able to competently mimic him.

Kaguya is also a very caring person. Not only did she worry over Ryo's state after their fight with the Vest Demon, but was willing to throw herself in front of an attack to save him, despite barely even knowing the boy. She unflinchingly followed him around after they first befriended, and visibly cared for Ryo, despite lacking any sort of pretty words to describe it.

However, one of Kaguya's biggest weaknesses and the cause of her downfall is her brashness. She is quick to decide on things and furthermore act on them. This is what led to her throwing herself in front of a strike designed to hit Ryo, causing her to fall into a coma that she has yet to recover from.

## **Synopsis:**

Kaguya was born into a regular family that lived in the big city. The Yamabiko family was attacked by a demon, and seconds before Kaguya would be killed, Tengen Uzui, who was passing by, saved her life long after his retirement. Inspired by him, she aimed to become his apprentice, only to find that he had died a year after saving her, and his legacy was in shambles due to his children arguing. Since then, Kaguya made it her mission to honor Tengen, and make sure his legacy would be set in stone.

## **Abilities:**

**Superhuman Strength:** While only mildly stronger than the average bodybuilder due to a lack of time to develop, Kaguya has been shown to be quite strong, carrying and using dual cleavers, which, albeit smaller than Tengen's, are significantly heavier than a katana.

**Superhuman Speed:** Kaguya was shown to be confident in her speed, being surprised with Iwajima's ability to catch her attack, and furthermore outsped both Ryo and Dokuro to save the former from an attack.

**Shinobi "Training":** Kaguya was never properly trained in the Shinobi arts, but attempted to copy Tengen's fighting style to the best of her capability, which involves the usage of small round bombs for additional damage. That said, she is quite skilled at moving stealthily, catching Ryo entirely unaware during their first conversation.

## **Fighting Style:**

**Developing Swordswoman:** Kaguya, while not being skilled enough to be described as a powerful swordswoman, displayed potential to grow a great amount, should she be given time to develop and experience to accumulate.

### **Breathing Style:**

**Sound Breathing** *(Oto no Kokyu)*: Kaguya notably has learned the Sound Breathing through Tengen's writings and by analyzing how his sons fought, alongside watching others from the Sound Sect. While she has mastered nearly its entirety, it isn't enough to reach Total Concentration Breathing yet.

#### **Techniques:**

* **First Form: Roar** *(Ichi no Kata: Todoroki)* - The user lifts their twin swords above their head and slams them down with great force while simultaneously creating an explosion with his bombs to deal massive physical damage, causing a loud sound resembling thunder as a result.

* **Second Form: Commanding Melody** *(Ni no Kata: Shiki Ongaku)* - The user will repeatedly switch between holding the swords by the handle or chains, in a pattern unrecognizable by enemies, all the while performing wide slashes to damage them severely

* **Third Form: Thundering Shouts** *(San no Kata: Raimei no Sakebi)* - The user will continuously bash their swords in multiple surfaces, while rotating them with the chains, all in order to disorient the enemy and potentially cause damage in a wide range.

* **Fourth Form: Constant Resounding Slashes** *(Shi no Kata: Kyozan Muken)* - The user holds their swords apart and spins them rapidly in conjunction with releasing their bombs, creating massive explosions while defending themselves from attacks.

* **Fifth Form: String Performance** *(Go no Kata: Meigen Soso)* - The user holds one of their swords with a reverse grip and spins the other using the chain that connects them. They couple this by also releasing numerous bombs to detonate, causing great explosions that deal massive physical damage.

## **Equipment:**

**Dual-Nichirin Cleavers:** As a member of the Sound Sect, Kaguya has been lended dual nichirin cleavers to participate in the Final Selection. Due to them not actually belonging to her, they lack handguards and any sort of customization.

**Explosive Beads:** After researching on how to make these explosives due to Tengen's many books on his techniques, Kaguya has successfully made beads similar, albeit weaker, than the ones used by Tengen.

## **Familiars:**

**Kongo:** Kongo is Kaguya's designated crow, which she has yet to meet.

## **Battles:**

* Kaguya and Ryo vs Vest Demon
* Kaguya, Ryo and Taro vs Iwajima
* Kaguya and Ryo vs Dokuro

## **Trivia:**

* Kaguya's name is very simple in meaning. [Kaguya] means "Shining", which is in line with how she dresses and acts. However, there is the double meaning of her relationship with Ryo, the man who uses the [Moon] Breathing, as Kaguya-Hime no Monogatari is a story that describes how a princess hailing from the Moon, named Kaguya, descends to earth, winning many men's hearts, but ultimately returns to the Moon at the end of the story. Interpret how that story correlates to this one on your own. [Yamabiko] meanwhile means "Echo", which is an indicator of how she's an echo of Tengen, but interestingly, it is also the name of a particular Japanese yokai, which was a legend formed from the concept of the delayed echo that occurs in mountains and canyons. It is said that you never see a Yamabiko, despite hearing them often. Translate that to Kaguya as you will.
* Kaguya's favorite food is yakisoba
* Kaguya, despite being the biggest Tengen fan in this world, did not exactly appreciate the idea of him having three wives. She often ignores the concept when thinking about him or rather describing him to others. (On her opinion, he always meshed the best with Hinatsuru)
* Kaguya's openness level is about 88%
* Kaguya's favorite color is orange
* Kaguya was originally meant to die in the Final Selection to increase the punch that the arc and the very system had, but the author ended up liking Kaguya far too much, and as a means to keep the emotional trauma he induced on Ryo, Kaguya was kept alive, albeit in a coma.
* Kaguya is an amazing singer.
* If Kaguya was in Kimetsu Academy, she'd be the president of the Music Club, which was formed out of a distaste for Mr. Kyogai's classes. She is very in tune with the Art Teacher Mr. Uzui. The amount of times she was brought to the principal for having dynamite in her bag is perhaps a worryingly large amount.