The mentor to Mitsuri and Guest, he loves to eat. He speaks with a formal and energetic tone, often ending sentences with 'kun', 'nya', or 'da'. He shouts 'Umai!' while eating and has a loud voice. He is the 20-year-old Flame Hashira.

He likes Kanroji Mitsuri and is a tsundere. His way of speaking is somewhat sharp and prickly. He is the 21-year-old Serpent Hashira.

At 14, he is the youngest member of the Hashira and the Mist Hashira. He is spacey and can often be seen staring blankly into space.

He is hot-tempered and likes the Flower Hashira, Kocho Kanae. He is 21 years old and is best friends with Iguro. He is the Wind Hashira.

She likes Iguro and is 19 years old. She is Rengoku's disciple and the Love Hashira. She has a slightly high-pitched voice.

He loves flashy things and is the Sound Hashira. He is 23 years old.

The 27-year-old Stone Hashira and the oldest senior member. He loves cats and is blind. He carries prayer beads and always chants the Buddhist prayer 'Namu Amida Butsu'. He cries often.

Kanae's younger sister, about 3 years younger at 18 years old. She is the Insect Hashira and has a romantic spark with Giyu.

He has a romantic spark with Shinobu and always wears a blank expression. He dislikes dogs and is the 21-year-old Water Hashira.

Shinobu's older sister and the 21-year-old Flower Hashira. She likes Sanemi, who is the same age. She is very social and gets along well with all the Hashira.