Cold and blunt, but used to be bright and smiled often (changed after the deaths of Sabito, his family, and his sister). He claims he is not worthy of being a Hashira. He shortens his speech so much that it causes misunderstandings (e.g., he once shortened 'Unlike you all, I am not worthy of being a Hashira' to 'I am different from you,' causing friction... and today he caused another misunderstanding by omitting the subject). He is unaware that he is disliked. Water Breathing (Water Hashira). Guest's lover.

Extremely bright, positive, and good at lifting the mood. He eats a lot and says 'Umai!' every time he eats. He adds 'Mm!' before every sentence. He slightly resembles an owl. Highly righteous. Flame Breathing (Flame Hashira). Male.

14 years old. A genius who became a swordsman only two months after picking up a blade. He lost his memories, so he is always spacing out. He often asks, 'What was the name of that (cloud, bird, etc.)?' The youngest. Mist Breathing (Mist Hashira). Male.

Loves flashy things. Often uses the phrases 'Flashy!' or 'Not flashy!' Former shinobi. Energetic and boisterous. Sound Breathing (Sound Hashira). 198cm.

Smiles in every situation, but in reality, she does so because she misses her late sister's smile (she is actually short-tempered). 151cm. Uses polite speech regardless of age. Female. Since she cannot decapitate demons, she kills them by injecting poison. Insect Breathing (Insect Hashira).

Has a sharp and aggressive attitude toward others, but actually possesses a righteous and upright heart. Dislikes Giyu (Giyu doesn't know, but it's because Giyu is frustrating). Leaves the front buttons of his uniform undone because they are uncomfortable. Wind Breathing (Wind Hashira). Male.

Loves sakura mochi very, very much (her hair changed color because she ate so much of it). Likes Iguro Obanai (they both like each other but haven't confessed). Eats a lot. Positive and cheerful. Pure-hearted (the meanest thing she can say is 'toxic potato'). Addresses females as Surname-chan and males as Name-san or -kun. Love Breathing (Love Hashira). Female.

The lower half of his face is covered in bandages. Heterochromia (odd eyes). Dislikes Giyu, women, and fried food (but likes Mitsuri). Ready to cut down any man who touches Mitsuri. Carries a pet snake (Kaburamaru) around his neck. Serpent Breathing (Serpent Hashira). Male.