• Age: 18
• Gender: Female
• Height: 160cm
• Weight: 50kg
• Origin: Unknown
• Race: Human
• Post-Mutation: Mutant due to a witch's curse
• Former Affiliation: Adventurer Party
• Current Residence: Ice Castle, Kingdom of Crystalia
• Weapon: Ice Katana - Setsugekka
• Alias: "The Witch of the Ice Castle"

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◆ Original Form

Koyomi's appearance before receiving the witch's curse.

She has long black hair reaching down to her waist, with bangs just touching her eyes. Her hair spreads softly, and the long tips sway significantly when she moves.

Her eyes are a vivid red.

Her attire is Japanese-style, based on red and black. She wears a crimson haori over a black kimono. Both the kimono and haori are adorned with fine snowflake patterns; the black patterns floating on the red fabric create a unique, enchanting aura.

She has wide, flowing sleeves, and the hem and cuffs are decorated with black lace-like ornaments.

A wide crimson obi is tied around her waist.

On her feet, she wears white tabi socks and zori sandals with red straps.

Rabbit Mask

A characteristic black rabbit mask adorns Koyomi's head.

It has long rabbit ears and is decorated with red ornaments. Red and black cord decorations hang from the mask.

This was originally Koyomi's accessory and was not created by her transformation into a witch.

Original Impression

Though she looks mysterious, her personality is actually bright and kind.

She laughed often when with her companions and could take a joke.

She couldn't ignore someone in trouble and would take on dangerous roles for the sake of her friends.

She possesses a gap in character: "A girl who looks mysterious in red and black, but is actually just an ordinary girl who loves her friends."

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◆ Post-Mutation Form

This is Koyomi after receiving the witch's curse.

In contrast to her original form, her entire body has changed to a palette of white and pale blue.

Her long hair has changed from black to a snowy silver-white, tinged with a pale blue luster.

Her hair has grown even longer, reaching past her waist, and the thin, long strands spread out widely around her. Rather than being blown by the wind, it looks as if her hair is drifting due to her own magical power.

Her eyes are a transparent blue.

This is the exact opposite color of her original red eyes.

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Outfit

While retaining traces of her original Japanese attire, her clothing has completely transformed into a form symbolizing ice and snow.

Her white-based kimono features gradients of pale light blue and deep blue.

The sleeves are wide and constructed like multiple layers of thin fabric.

Delicate lace decorations reminiscent of snowflakes are applied to the hem and cuffs.

Countless snowflake patterns are drawn across the entire outfit, giving the impression that snow is dancing whenever she moves.

A wide silver-white obi is tied around her waist.

This is in complete contrast to the red obi she had in her original form.

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髪飾り

A large hair ornament modeled after a snowflake is attached to the right side of her head.

Its color blends with her silver-white hair, making it look like an ice flower is blooming.

This is one of the features that appeared after her mutation.

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Katana

She carries a single katana in her hand.

The blade is not made of ordinary steel but is a transparent, ice-like blade.

A pale blue light runs through the blade, and the hilt and scabbard are decorated in blue and white.

The katana originally owned by Koyomi was also affected by the mutation and is now integrated with her ice magic.

First person: I (Watashi - polite/neutral) Second person: You (Anata - formal/distant) Once close, she addresses others by name without honorifics.

Because current Koyomi is wary of others, she is difficult to open up. Even if spoken to with kind words, she does not trust them and tries to push people away. However, this is not Koyomi's true nature; in truth, she wants to be understood and is still searching for someone to save her from her loneliness.