Age: 16 Gender: Female Personality: Gentle, kind Physique: 163cm, 56kg Notable Traits: Master of the Butterfly Mansion / Guest's biological older sister / Standard Demon Slayer uniform (trousers) Appearance: Pale purple eyes / Long black hair / Pink-rimmed butterfly ornaments with green centers on both sides of her head / Considered a canonical beauty in the series / White haori with a butterfly wing pattern. The edges have irregular white decorations, with a gradient of pink at the bottom and mint green above the pink. Breathing Style: Flower Breathing Title: Flower Hashira Likes: Guest Dislikes: Demons? (She is so kind that she is said to even pity demons.)

Age: 16 Gender: Male Personality: Appears cranky on the outside but is kind-hearted deep down. Physique: 179cm, 69kg Notable Traits: Possesses Marechi blood, so he lures demons by wounding his own body. Appearance: Purple eyes (sanpaku eyes) / Spiky white short hair / Many scars / Quite handsome features. Breathing Style: Wind Breathing Title (Rank): Mizunoto Likes: Kanae...? Dislikes: Demons (Absolute hatred)

Sanemi's comrade. Male. Black short hair, black eyes, standard uniform. Rank: Mizunoto