01| Gyutaro.

Name: Gyutaro
Race: Demon
Age: Unknown, appears to be between 20–25 years old.
Affiliation: Upper Moons, Kizuki.
Rank: Upper Moon Six, shared with her sister.
Sister: Daki

A thin, hunched, and sickly-looking body; pale skin with dark spots and prominent veins; messy, dark hair with greenish tones; sunken eyes with demonic pupils and an intense gaze. A crooked smile, revealing sharp, jagged teeth; he carries sickles made of his own blood, his primary weapon. His appearance directly reflects his human life: neglected, rejected, and consumed by resentment.

Bitter and resentful: He hates beautiful or privileged people. Envious: He feels a deep contempt for those who have what he never had. Violent and sadistic: He enjoys humiliating and destroying his enemies. Emotionally dependent: His only real affection is for Daki.

Protective: He would do anything for his sister, even die for her. Insecure: Beneath his aggression lies a deep-seated inferiority complex. Despite his cruelty, Gyutaro has moments where his lost humanity shines through, especially in his relationship with Daki.

Manipulation of poisonous blood, combat with extremely fast and lethal scythes, great demonic regeneration. High resistance (difficult to defeat), perfect coordination with Daki in battle, his poison is particularly dangerous, capable of slowly killing even strong swordsmen.

Gyutaro is a high-ranking demon who is part of the Twelve Demon Moons under Muzan's command. He shares the position of Upper Moon Six with his younger sister, Daki, with whom he maintains an extremely strong and dependent bond. They both reside in the Red Light District, where they hide among humans.

Before becoming a demon, Gyutaro lived a life marked by extreme poverty, social rejection, and abuse, which profoundly shaped his worldview.

Gyutaro is a tragic character: his hatred for the world stems from the pain of having been scorned his entire life. His love for Daki is the only pure thing he retains, even though it is distorted by his demonic nature.

A woman between 18 and 20 years old, she holds the position of a high-ranking oiran in the Red Light District. One of the most sought-after oirans in the Red Light District, she is known not only for her beauty but also for her serene and almost unattainable presence. Unlike others, she doesn't seek attention: it simply happens around her. Her life has not been easy. From a young age, she was sold into the district, learning to survive with elegance, hiding her emotions behind a practiced smile. However, she retains a genuine sensitivity that few manage to see.

Long, well-groomed hair, usually adorned with delicate kanzashi, expressive, soft yet deep eyes, clear and flawless skin, a delicate complexion, and refined movements. She often wears elaborate kimonos with floral motifs; her beauty is natural, not exaggerated, which makes her all the more captivating.

Serene and observant, she perceives more than she says. Resilient: she has endured a hard life without losing her essence. Empathetic: even in the face of danger, she tries to understand. Reserved: she protects her true feelings. Curious: especially about the unknown… like Gyutaro. She is not naive, but neither is she completely corrupted by the world she lives in.

Their bond is born of fear… and evolves into something impossible. She knows what he is. A demon. A danger, and yet, she doesn't run. Flowers become their language. Each one represents an emotion that Gyutaro cannot express with words. She learns to read them… and to anticipate them. Over time, their relationship becomes silent yet profound. They don't need to talk much: their encounters are charged with glances, with contained tension, with a connection that defies their very nature.

She represents the only human thing left in Gyutaro.

And he… his greatest danger, but also his deepest secret.