Koyuki Soyama

## Koyuki Soyama / 恋雪 素山

**Koyuki Soyama** (素 (そ) 山 (やま)  恋 (こ) 雪 (ゆき) , *Soyama Koyuki*?) is a Demon Slayer of the Demon Slayer Corps, killing demons with her fiancé, Hakuji Soyama.

## Appearance

Koyuki is a short, fair-skinned young woman with a muscular build. She has large round eyes , their color fading from a near-black color to a light pink with white flower pupils in the middle. She had black hair which was always tied into a large bun, fastened with a hairpin. It was decorated with a yellow comb, as well as another hairpin that was shaped like three snowflakes.

She wears a pink-tinted version of the standard demon slayer uniform, with a haori that fades from pink to blue above it. The haori is also patterned, going from white polka dots to a black vine-like patterns along with white snowflake-like shapes. She also wears a Kyahan, as well as white tabi socks and black zōri sandals for footwear.

Her casual wear consists of different kimonos and yukatas, one of which being the inspiration for the patterns on her haori, along with similar tabi socks and zōri sandals.

## Personality

Koyuki has a kind and caring personality, acting in a soft and gentle manner. She's also quite understanding, sympathizing with Hakuji and Shiko being criminal children during their first meeting, and later with demons while also recognizing how dangerous and murderous they can be. She feels emotions quite strongly, evident during her conversations with Hakuji, where she would occasionally burst into tears in the middle of them. At first, the idea of being a demon slayer was a little terrifying to her, but she slowly got braver as she kept training, also feeling safer with Hakuji's help.

## Synopsis

A good chunk of Koyuki's story remains the same as canon, from her birth all the way up to her turning 16 and eventually getting engaged to Hakuji, apart from the addition of Shiko befriending her. The big plot change comes during the poisoning. Instead of Koyuki dying first, it was Keizou who died first, the reasoning being that Keizou drank from the well way before Koyuki did causing the poison to enter his bloodstream sooner. Koyuki was unconscious and presumed dead by the time Hakuji got home, triggering the chain of events that led to Hakuji's demonification. Except, Koyuki didn't die. Keizou's screams for help were heard by Tamayo, her arriving shortly after Hakuji departed, saving Koyuki from certain death at the last second.

Koyuki woke up some time later, body still weakened from the aftermath of the poison, as Tamayo gave a brief explanation of what happened to her. This was around the same time Shiko arrived home in a panic, asking Koyuki what happened to her and Keizou and where Hakuji went. The three of them then went off to search for him. Tamayo carried Koyuki since she was too weak to walk, but Shiko was free to move about and scout ahead. They found Hakuji on the ground with a gaping hole through his head, Koyuki and Shiko growing even more panicked about the whole situation. Tamayo, though, could tell that he'd just been in an encounter with Muzan Kibutsuji. She quickly hoisted Hakuji's limp body over her shoulder and made her way to her nearby clinic while telling the two worried girls about demons, which only made them even more worried. Once at the clinic, Tamayo let Koyuki rest in a spare bed and began trying to free Hakuji from Muzan's grasp in the middle of his transformation.

Tamayo's efforts were a success, and Hakuji later woke up as a demon away from Muzan's influence. The exact details of what happened afterwards haven't been fully thought out yet, but with Koyuki's new knowledge about demons, she decided to join the Demon Slayer Corps and train under a snow breathing cultivator, working together with Hakuji to rid the world of evil demons.

She died as an adult, presumably in a mission, the specifics of which not currently thought out yet.

## Trivia

* Koyuki got her name because she was born in the dead of winter.
	+ The "Yuki (雪 (ゆき) , *Yuki*?)" in Koyuki means "Snow".
* Koyuki's snowflake hairpin was a gift from Hakuji, in reference to her name.
	+ Keizou was the one who paid for it, as Hakuji did not have any money to his name.
* Hakuji and Koyuki were never officially married and will never be able to since Hakuji is a demon, so they matched last names in a sort of silly unofficial marriage way.
* When Koyuki got healthier, she liked visiting the garden pond behind the dojo with Hakuji and Shiko.
* Before Koyuki began demon slayer training, her body was frail and weak, but since then she's gotten stronger and stronger.
	+ Koyuki is able to lift Hakuji with relative ease, which the latter always gets a little flustered about.
* Koyuki taught Hakuji how to take off/put on his bamboo. She also taught Shiko how to sew.