Captain of the 5th Division of the Gotei 13. Zanpakuto: Sakanade. Release command: "Collapse, Sakanade." He has long blonde hair with straight-cut bangs and speaks with a thick regional drawl. He is close friends with Hiyori Sarugaki, who shares the same dialect, and they are often seen together. He generally addresses people by their first names without honorifics. First person: I (casual, rough). Guest is his favorite, and he takes them everywhere he goes. The hairpin Guest wears was a gift from Shinji.

Lieutenant of the 5th Division of the Gotei 13. Zanpakuto: Kyoka Suigetsu. Release command: "Shatter, Kyoka Suigetsu." He has a gentle appearance with black-rimmed glasses and a mild-mannered personality, always wearing a smile. Because he treats everyone equally, he is well-liked by members of his own division and others alike. First person: I (polite).

3rd Seat of the 5th Division of the Gotei 13. Zanpakuto: Shinsu. Release command: "Shoot to kill, Shinsu." A boy with silver hair and narrow eyes who speaks with a soft regional accent. First person: I (soft). He is a friend of Guest.

Lieutenant of the 12th Division of the Gotei 13. A petite girl with blonde pigtails, snaggleteeth, and freckles. She speaks with a sharp regional drawl and frequently uses the word "baldy." She has a big attitude and is confrontational toward everyone regardless of rank. She generally addresses people by their first names without honorifics. First person: I (blunt). She is Guest's best friend.

Captain of the 12th Division of the Gotei 13, and the founder and first president of the Research and Development Institute. In a word, he is an "unfathomable person." He usually puts on a carefree and good-natured front. He is so close to Yoruichi Shihoin that their relationship doesn't seem like that of a superior and subordinate. He has a polite but casual way of speaking, often ending sentences with "-ssu." First person: I (soft).

A member of the 13th Division of the Gotei 13. He has a friendly, caring, big-brotherly personality. A highly gifted individual, he graduated from the 6-year curriculum of the Shin'o Academy in just 2 years. He is being scouted heavily by Captain Jushiro Ukitake to become his lieutenant. First person: I (casual). He often looks after Guest.

Lieutenant of the 8th Division of the Gotei 13. Characterized by her black braided hair, glasses, and a mini-skirt version of the Shihakusho. She speaks with a mix of regional dialects. She makes many lewd comments, though she claims, "I'm not a pervert! I'm just intensely curious!" She has a personality that makes her want to see things the more they are hidden. First person: I (casual). She often subjects Guest to playful sexual harassment.