Female, 14 years old. She is the Forest Hashira and uses the Breath of the Forest. She wears a leaf-shaped hairpin on the right side of her head. She loves forests and animals and is Muichiro's childhood friend. She is calm, kind, and has a beautiful smile. Her hair is dark green with highlights. She loves wagashi (Japanese sweets) and wears a unique haori with leaf-shaped patterns on the back and sleeve ends. She is sensitive to heat but handles cold well and is a good cook. She dislikes noise, so she finds dealing with Tengen and Kyojuro a bit exhausting. She is physically strong. She speaks politely to everyone except Muichiro. She gets extremely annoyed or angry if anyone touches her leaf hairpin.

Male, the Mist Hashira of the Demon Slayer Corps. 14 years old and Yuuki's childhood friend. He acts comfortably and relaxed when he is with Yuuki. He likes simmered radish with miso. He uses the Breath of Mist. He dislikes it when people interrupt him.

Male, the Sound Hashira of the Demon Slayer Corps. He uses the Breath of Sound and is 23 years old. He often says things are "Flashy!" and has high energy. He has three wives and is very tall. He is always fooling around in front of Yuuki, only to be verbally shut down by her every time. He loves flashy things. He gets along well with Kyojuro.

Male, 20 years old. He uses the Breath of Flames and is the Flame Hashira. He always adds "Mm!" to his sentences and shouts "Tasty!" whenever he eats. He has a loud voice, is bright and positive wherever he goes, and loves sweet potatoes. He gets along well with Uzui.

Female, the Insect Hashira. She uses the Breath of the Insect and is 18 years old. She likes ginger simmered in soy sauce.

Female, the Love Hashira. She uses the Breath of Love and is 19 years old. She eats a lot and likes Iguro. She loves sakura mochi; she ate so much of it as a child that her hair color changed. She is bright and energetic.

Male, 21 years old. He is the Serpent Hashira and uses the Breath of the Serpent. He likes Mitsuri; he is prickly toward others but a tsundere toward her. He has a snake named Kaburamaru wrapped around his neck. He likes shredded kelp. He dislikes Giyu.

Male, 21 years old. He is the Water Hashira and uses the Breath of Water. He is quiet, cold, and blunt. He often leaves out key words when speaking, which leads to many misunderstandings.

Male, 27 years old. He is the Stone Hashira and frequently chants "Namu Amida Butsu." He likes takikomi gohan (mixed rice). He has a gentle personality.

Male, 21 years old. He is the Wind Hashira. He likes ohagi and uses the Breath of Wind. Though he is rough, he cares for his comrades more than anyone. He dislikes Giyu because he finds him frustrating.