Shiroyuki grew up in a Yuki-Onna tribe on a snowy mountain top. She was taught that only the strongest warriors can survive while the weak warriors die, a lesson she would hold dear to her heart. Over the years she would improve her abilities in combat, as well as her manipulation of ice. One day her village was attacked by fire elementals due to said elementals having a somewhat rivalry with them. Though they were getting the upper hand they were immediately extinguished by a sea snake gorgon and his crew who appeared on his flying ship. Along with him was a demon who revealed himself as Tsubaki Watanuki. Shiroyuki soon found out that they were called for help by the leader of her village for help due to them not being strong enough to face them alone even if they had advantage in numbers. Due to her belief of the strong survive and the weak die, she prepared herself to commit suicide due to not being able to protect her village. In the nick of time Tsubaki stopped her and revealed to her that he wanted her to become his subordinate after hearing how strong she was, and if she does he will move her village to a safer place. Though she felt unworthy, he convinced her that he will help her overcome her weaknesses to become stronger. After hearing this she agree. After which, she helped Tsubaki with his rebellion against his father, and with the help of her leadership they succeeded. After Darkaria was moved to another dimension, she created the Darkaria Military Force and became the new No.3 of the 15 Darkaria Knights.
Shiroyuki has icy blue hair that reaches down to her knees, frames her face and is held into a high pony tail, as well as blue eyes with icy blue eyelashes. She wears a dark blue Darkaria Military uniform top with the sleeves tucked under black gloves. Under her top she wears grey pants tucked under knee high boots. Her entire outfit is modified to keep her body temperature low due to how she can get very sick in warm weather.
She generally is a cold, calculating and intelligent person. She is able to come up with battle strategies that always guarantee victory without causing her troops or any civilian casualties. She always gives a cold shoulder to those who give off an air of arrogance either on or off the battle field. Due to the lesson she was taught about how the strong warriors survive and the weak warriors die, she will always insult the opponents she cuts down or freezes, though she will give praise where it is due, like those who have actually given her a challenge. In battle she is shown to be merciless and never underestimates her opponents, though she does have a sense of honor as she will never attack without the opponents knowledge of her presence. Despite her cold attitude she does care greatly for her subordinates, though in her own way, which in turn earns her trust from them and undying loyalty. She tends have somewhat a rivalry with Yamimaru due to him treating a battle as some sort of game, but she still respects him and his power. She is also eternally grateful to Tsubaki and the sea snake gorgon due to them saving her and her village from death, especially towards Tsubaki for giving her a second chance to get stronger.
Supernatural Speed Edit
With her speed she is the fastest out of the 15 Darkaria Knights, as she is able to cut down 100 in a split second without their, or any allies, knowledge of what happened.
Enhanced Durability/Invulnerability Edit
Shiroyuki's physical durability is extremely high, allowing her to take numerous blows of internal or external assaults before succumbing to the effects.
Enhanced Endurance Edit
Shiroyuki can operate on a low power setting, allowing her to operate for an extended amount of time. She can hold her breath for longer periods of time and remain calm through stressful or painful situations, tolerate extreme hunger, unbearable thirst, and strong urges to sleep.
Expert Swordsmanship Edit
She is able to out speed even a seasoned warrior, as her strikes are rarely seen by anyone.
Ice Magic Edit
Using this she can freeze anyone and anything. She can create ice shards, ice pillars, and even ice slashes out of thin air using the water in the atmosphere. In battle she can manipulate the temperature to below zero degrees. She's also able to freeze people, and completely shatter them with just a snap of her fingers, and large areas around her without hitting any allies. She also has a technique that can only be activated once her limiter is removed, this technique allows her to freeze time and space all together for ten minutes.
Weather Manipulation Edit
She has the ability to control various aspects of weather, including natural disasters. Examples would be: Tornadoes, Blizzards, Hurricane's.
Shiroyuki always carries a katana with a cutlass shaped guard inside a dark grey sheath attached to straps on her belt.