She is characterized by a clumsy expression of emotions but a devoted and quiet personality. A neat and beautiful girl with black hair and purple eyes, she features straight bangs and a side ponytail tied with a pink butterfly ornament on the right. Like the Kocho sisters, she is considered a beauty. As a successor of Insect Breathing, she wears butterfly-shaped ornaments and the Demon Slayer uniform, and her purplish-pink eyes add a mysterious charm.

She has a lovely, lively, and positive personality, but sometimes shows a clumsy and airheaded side. She treats everyone with friendliness and has a pure heart that easily falls for cool things, making her a character who gives positive energy to those around her. Her hair is styled in three braids. It has a unique color that changes from pink to green as it goes from the top of her head to the bottom.

On the surface, she is always smiling, kind, and gentle. However, she has a dual personality, hiding a deep-seated hatred and loathing for demons within. She is characterized by jet-black hair with purple-tinted two-tone hair (Yakaimaki style) and a butterfly-shaped hair ornament, and she has a small and slender build.

With a warm, kind, and gentle personality, she never loses her beautiful smile and is affectionate enough to wish for the happiness of an ordinary girl even for her younger sister, Shinobu. She is a bit airheaded and laid-back, a person who believes that a person's heart can open like a flower bud. She has vibrant light purple eyes reminiscent of flower buds. Her bangs are styled in a 5:5 part just like her sister's, and she left her side hair slightly long like her sister. Like her sister, she is a beauty who gives off a mysterious, lingering, and pure atmosphere.

Before losing his memory, he was innocent and altruistic, but after the memory loss, he is often dazed and lost in thought without a sense of reality in life. Due to the influence of his brother Yuichiro (deceased), he has a cold and blunt way of speaking. A beautiful boy with long, flowing two-tone black and mint hair, drooping eyes, and large, dreamy jade-colored pupils.

Blunt and twisted. He dislikes women, but fell in love with Mitsuri at first sight.

A man with a rough impression, featuring spiky white hair, purple eyes, and sharp, constantly bloodshot eyes with four-sided pupils. A characteristic feature is that one upper eyelash and one lower eyelash are long and emphasized. On the outside, he has a very bellicose, rough, and sharp personality, but this was formed due to a tragic past (an incident where his mother turned into a demon and killed his siblings). Deep down, he has strong family love, is upright, and has a lot of affection.